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(12+5x)=47
We move all terms to the left:
(12+5x)-(47)=0
We add all the numbers together, and all the variables
(5x+12)-47=0
We get rid of parentheses
5x+12-47=0
We add all the numbers together, and all the variables
5x-35=0
We move all terms containing x to the left, all other terms to the right
5x=35
x=35/5
x=7
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