20=3x-2+4x+1

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Solution for 20=3x-2+4x+1 equation: 



20=3x-2+4x+1

We move all terms to the left:

20-(3x-2+4x+1)=0

We add all the numbers together, and all the variables

-(7x-1)+20=0

We get rid of parentheses

-7x+1+20=0

We add all the numbers together, and all the variables

-7x+21=0

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

-7x=-21

x=-21/-7

x=+3

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