4x+12=7x-9x

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



4x+12=7x-9x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

4x+2x+12=0

We add all the numbers together, and all the variables

6x+12=0

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

6x=-12

x=-12/6

x=-2

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