8-7x+3x=-20

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Solution for 8-7x+3x=-20 equation: 



8-7x+3x=-20

We move all terms to the left:

8-7x+3x-(-20)=0

We add all the numbers together, and all the variables

-4x+28=0

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

-4x=-28

x=-28/-4

x=+7

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