-54+x=66-7x

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Solution for -54+x=66-7x equation: 



-54+x=66-7x

We move all terms to the left:

-54+x-(66-7x)=0

We add all the numbers together, and all the variables

x-(-7x+66)-54=0

We get rid of parentheses

x+7x-66-54=0

We add all the numbers together, and all the variables

8x-120=0

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

8x=120

x=120/8

x=15

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