12x+42=10x+-2x+-9

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Solution for 12x+42=10x+-2x+-9 equation: 



12x+42=10x+-2x+-9

We move all terms to the left:

12x+42-(10x+-2x+-9)=0

We add all the numbers together, and all the variables

12x-(+8x)+42=0

We get rid of parentheses

12x-8x+42=0

We add all the numbers together, and all the variables

4x+42=0

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

4x=-42

x=-42/4

x=-10+1/2

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