x-4=7x-12+2x

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Solution for x-4=7x-12+2x equation: 



x-4=7x-12+2x

We move all terms to the left:

x-4-(7x-12+2x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

x-9x+12-4=0

We add all the numbers together, and all the variables

-8x+8=0

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

-8x=-8

x=-8/-8

x=1

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