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5x-7(2-x)=345
We move all terms to the left:
5x-7(2-x)-(345)=0
We add all the numbers together, and all the variables
5x-7(-1x+2)-345=0
We multiply parentheses
5x+7x-14-345=0
We add all the numbers together, and all the variables
12x-359=0
We move all terms containing x to the left, all other terms to the right
12x=359
x=359/12
x=29+11/12
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