-21=-7x+5x+1

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Solution for -21=-7x+5x+1 equation: 



-21=-7x+5x+1

We move all terms to the left:

-21-(-7x+5x+1)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

2x-1-21=0

We add all the numbers together, and all the variables

2x-22=0

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

2x=22

x=22/2

x=11

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