20=7x+2-1x

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



20=7x+2-1x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(6x+2)+20=0

We get rid of parentheses

-6x-2+20=0

We add all the numbers together, and all the variables

-6x+18=0

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

-6x=-18

x=-18/-6

x=+3

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