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15x+20=x+62
We move all terms to the left:
15x+20-(x+62)=0
We get rid of parentheses
15x-x-62+20=0
We add all the numbers together, and all the variables
14x-42=0
We move all terms containing x to the left, all other terms to the right
14x=42
x=42/14
x=3
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