12x+54=4x-42

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Solution for 12x+54=4x-42 equation: 



12x+54=4x-42

We move all terms to the left:

12x+54-(4x-42)=0

We get rid of parentheses

12x-4x+42+54=0

We add all the numbers together, and all the variables

8x+96=0

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

8x=-96

x=-96/8

x=-12

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