7x-x=-20+x

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Solution for 7x-x=-20+x equation: 



7x-x=-20+x

We move all terms to the left:

7x-x-(-20+x)=0

We add all the numbers together, and all the variables

7x-x-(x-20)=0

We add all the numbers together, and all the variables

6x-(x-20)=0

We get rid of parentheses

6x-x+20=0

We add all the numbers together, and all the variables

5x+20=0

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

5x=-20

x=-20/5

x=-4

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