x+8x-x-4=4x-12

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Solution for x+8x-x-4=4x-12 equation: 



x+8x-x-4=4x-12

We move all terms to the left:

x+8x-x-4-(4x-12)=0

We add all the numbers together, and all the variables

8x-(4x-12)-4=0

We get rid of parentheses

8x-4x+12-4=0

We add all the numbers together, and all the variables

4x+8=0

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

4x=-8

x=-8/4

x=-2

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