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Newbie

Can anyone help me with this problem? I can't figure out what I'm doing wrong.

Solving for x
2(x-7)+3x=1-3(4x-9)
7 REPLIES 7

On 1/19/2004 10:33:07 PM, Pamela wrote:
>Can anyone help me with this
>problem? I can't figure out
>what I'm doing wrong.
>
>Solving for x
>2(x-7)+3x=1-3(4x-9)
-----------------------
Expand to get 2x-14+3x=1-12x+27
Collect terms in x on the left and numerals on the right and solve for x.

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Physics: Common Sense made Obscure by Mathematics Don Sparlin

I need step by step! I'm still not getting it.

2(x-7)+3x=1-3(4x-9)

Expand

2*(x-7) = 2*x - 14
-3*(4x-9) = -12*x + 27

2*x - 14 + 3*x = 1 - 12*x + 27

Simplify by collecting like terms

(2*x + 3*x) - 14 = (1 + 27) - 12*x
5*x - 14 = 28 - 12*x

Gather variables to one side and everything else to the other side

(5*x + 12*x) - 14 = 28 + (12*x - 12*x)
17*x - 14 = 28

17*x + (14 - 14) = (28 + 14)
17*x = 42

Divide by 17

(17/17)*x = 42/17
x = 42/17

2(x-7)+3x=1-3(4x-9)
2((42/17)-7)+3(42/17)=1-3(4(42/17)-9)

You do the rest...

For Pam

The equal sign is "Ctrl+="  not "="