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20+2x=20+6x
We move all terms to the left:
20+2x-(20+6x)=0
We add all the numbers together, and all the variables
2x-(6x+20)+20=0
We get rid of parentheses
2x-6x-20+20=0
We add all the numbers together, and all the variables
-4x=0
x=0/-4
x=0
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