Any math hats here?

Murderers.

markymark550 wrote:

on the right side, distribute the -3 over the (x+1) and then solve the equation for x

if I've done it correctly, x = -4/11

What do you mean by 'distribute the -3 over (x-1)?

Thanks for the help.

stuckinline

Murderers wrote:

What do you mean by 'distribute the -3 over (x-1)?

Thanks for the help.

-3(x+1)= -3x-3

westsidepie

Murderers wrote:

What do you mean by 'distribute the -3 over (x-1)?

Thanks for the help.

He means take the expression 5-3(x+1) and do the multiplication of -3 over the expressions x and 1, which gives you -3x-3. The whole expression is 5-3x-3. Now combine like terms to give you the expression 2-3x. Now the equation is

x+5/3 = 2-3x/2

You can solve for x.

Murderers.

westsidepie wrote:

He means take the expression 5-3(x+1) and do the multiplication of -3 over the expressions x and 1, which gives you -3x-3. The whole expression is 5-3x-3. Now combine like terms to give you the expression 2-3x. Now the equation is

x+5/3 = 2-3x/2

You can solve for x.

Thank you!

X = 4/11 in the end.

markymark550

stuckinline wrote:

-3(x+1)= -3x-3

westsidepie wrote:

He means take the expression 5-3(x+1) and do the multiplication of -3 over the expressions x and 1, which gives you -3x-3. The whole expression is 5-3x-3. Now combine like terms to give you the expression 2-3x. Now the equation is

x+5/3 = 2-3x/2

You can solve for x.

Sorry I wasn't available to explain before, but yes, follow what stuckinline and westsidepie said and you should be able to finish....

stuckinline

westsidepie wrote:

He means take the expression 5-3(x+1) and do the multiplication of -3 over the expressions x and 1, which gives you -3x-3. The whole expression is 5-3x-3. Now combine like terms to give you the expression 2-3x. Now the equation is

x+5/3 = 2-3x/2

You can solve for x.

isn't the expression 5- 3(x+1)/2


becomes 5- (3x+3)/2
then 5-3x/2 -3/2 ???

Murderers.

stuckinline wrote:

isn't the expression 5- 3(x+1)/2


becomes 5- (3x+3)/2
then 5-3x/2 -3/2 ???

No, because you get the -3 from -3 x 1.

stuckinline

Murderers wrote:

No, because you get the -3 from -3 x 1.

so what expression is divided by 2?

is it -3(x+1)/2?


then that is -3x/2-3/2

jimed14

Murderers wrote:

Thank you!

X = 4/11 in the end.

actually ... it's -4/11

I even checked it on excel ... if you know how to use "solver" it will do all your algebra for you!

But indeed, if you need to actually do it out, we can help!

intodeep

I have not done algerbra since my freshman year in college. I've never had a need to do that in "real life"

It is sad i forget a lot of it.

markymark550

stuckinline wrote:

so what expression is divided by 2?

is it -3(x+1)/2?


then that is -3x/2-3/2

I think it should technically be written as:

(5 - 3(x+1))/2

which does simplify down to (2 - 3x)/2

markymark550

jimed14 wrote:

actually ... it's -4/11

I even checked it on excel ... if you know how to use "solver" it will do all your algebra for you!

But indeed, if you need to actually do it out, we can help!

hot damn! I was right! Man it's been a while since I've done algebra and I wasn't sure I was correct....

stuckinline

markymark550 wrote:

I think it should technically be written as:

(5 - 3(x+1))/2

which does simplify down to (2 - 3x)/2

thanks

westsidepie

jimed14 wrote:

actually ... it's -4/11

I even checked it on excel ... if you know how to use "solver" it will do all your algebra for you!

But indeed, if you need to actually do it out, we can help!

-4/11 is the correct answer. The long way of solving for x in this equation is cross multiply, then keep moving terms back and forth across the equal sign. In the final step you multiply each side by 1/11, which is the same as dividing each side by 11, and leaves you with x= -4/11. If you need me to, I can write out each step.

Murderers.

jimed14 wrote:

actually ... it's -4/11

I even checked it on excel ... if you know how to use "solver" it will do all your algebra for you!

But indeed, if you need to actually do it out, we can help!

Ahh, yeah.

But anyway, all this math is making my head hurt!

Onto spanish.....

JaneNY

markymark550 wrote:

I think it should technically be written as:

(5 - 3(x+1))/2

which does simplify down to (2 - 3x)/2

Yes I was going to question this too, because with hierarchy of operations, and the expression originally listed as 5-3(x+1)/2, it can be interpreted with the 5 being a separate term and not part of the numerator over 2. So Murderers be careful with your parentheses. You do know the hierarchy of operations right? (go left to right, taking into account parentheses, with multiplication and division taking precedence over addition and subtraction).

edvedder913

wow....it's amazing how you forget this stuff! algebra was my favorite and i got 100 in the class, but for the life of me remember NONE of this!

Murderers.

JaneNY wrote:

You do know the hierarchy of operations right? (go left to right, taking into account parentheses, with multiplication and division taking precedence over addition and subtraction).

As in BODMAS?

westsidepie

Murderers wrote:

As in BODMAS?

I don't know BODMAS, but I think JaneNY is talking about

P-parentheses first
E-exponents (and roots) second
M-multiplication third
D-division third (multiplication and division should be done together, working from left to right)
A-addition fourth
S-subtraction fourth (addition and subtraction should be done together, working from left to right)

JaneNY is also right about the expression. I interpreted the 5 as part of the expression. If the 5 was a separate expression, then you would have had to find the LCD to solve for x.

jimed14

westsidepie wrote:

I don't know BODMAS, but I think JaneNY is talking about

P-parentheses first
E-exponents (and roots) second
M-multiplication third
D-division third (multiplication and division should be done together, working from left to right)
A-addition fourth
S-subtraction fourth (addition and subtraction should be done together, working from left to right)

JaneNY is also right about the expression. I interpreted the 5 as part of the expression. If the 5 was a separate expression, then you would have had to find the LCD to solve for x.

Please Excuse My Dear Aunt Sally ... that's how we were taught.