12+7x+5x=5x+4x

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Solution for 12+7x+5x=5x+4x equation: 



12+7x+5x=5x+4x

We move all terms to the left:

12+7x+5x-(5x+4x)=0

We add all the numbers together, and all the variables

7x+5x-(+9x)+12=0

We add all the numbers together, and all the variables

12x-(+9x)+12=0

We get rid of parentheses

12x-9x+12=0

We add all the numbers together, and all the variables

3x+12=0

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

3x=-12

x=-12/3

x=-4

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