9x+20=3x-7

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Solution for 9x+20=3x-7 equation: 



9x+20=3x-7

We move all terms to the left:

9x+20-(3x-7)=0

We get rid of parentheses

9x-3x+7+20=0

We add all the numbers together, and all the variables

6x+27=0

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

6x=-27

x=-27/6

x=-4+1/2

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