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9x+8=5x+42
We move all terms to the left:
9x+8-(5x+42)=0
We get rid of parentheses
9x-5x-42+8=0
We add all the numbers together, and all the variables
4x-34=0
We move all terms containing x to the left, all other terms to the right
4x=34
x=34/4
x=8+1/2
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