3x+12-x=9+4x-7

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Solution for 3x+12-x=9+4x-7 equation: 



3x+12-x=9+4x-7

We move all terms to the left:

3x+12-x-(9+4x-7)=0

We add all the numbers together, and all the variables

3x-x-(4x+2)+12=0

We add all the numbers together, and all the variables

2x-(4x+2)+12=0

We get rid of parentheses

2x-4x-2+12=0

We add all the numbers together, and all the variables

-2x+10=0

We move all terms containing x to the left, all other terms to the right

-2x=-10

x=-10/-2

x=+5

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