7x-x-1=-7x+21

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



7x-x-1=-7x+21

We move all terms to the left:

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

We add all the numbers together, and all the variables

6x-(-7x+21)-1=0

We get rid of parentheses

6x+7x-21-1=0

We add all the numbers together, and all the variables

13x-22=0

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

13x=22

x=22/13

x=1+9/13

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