-x+20=3x+13

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Solution for -x+20=3x+13 equation: 



-x+20=3x+13

We move all terms to the left:

-x+20-(3x+13)=0

We add all the numbers together, and all the variables

-1x-(3x+13)+20=0

We get rid of parentheses

-1x-3x-13+20=0

We add all the numbers together, and all the variables

-4x+7=0

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

-4x=-7

x=-7/-4

x=1+3/4

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