-54+2x=-x+21

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Solution for -54+2x=-x+21 equation: 



-54+2x=-x+21

We move all terms to the left:

-54+2x-(-x+21)=0

We add all the numbers together, and all the variables

2x-(-1x+21)-54=0

We get rid of parentheses

2x+1x-21-54=0

We add all the numbers together, and all the variables

3x-75=0

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

3x=75

x=75/3

x=25

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