-20=1+7x+2

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Solution for -20=1+7x+2 equation: 



-20=1+7x+2

We move all terms to the left:

-20-(1+7x+2)=0

We add all the numbers together, and all the variables

-(7x+3)-20=0

We get rid of parentheses

-7x-3-20=0

We add all the numbers together, and all the variables

-7x-23=0

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

-7x=23

x=23/-7

x=-3+2/7

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