3x+20=21x-12

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Solution for 3x+20=21x-12 equation: 



3x+20=21x-12

We move all terms to the left:

3x+20-(21x-12)=0

We get rid of parentheses

3x-21x+12+20=0

We add all the numbers together, and all the variables

-18x+32=0

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

-18x=-32

x=-32/-18

x=1+7/9

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