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X+7(X-1)=22
We move all terms to the left:
X+7(X-1)-(22)=0
We multiply parentheses
X+7X-7-22=0
We add all the numbers together, and all the variables
8X-29=0
We move all terms containing X to the left, all other terms to the right
8X=29
X=29/8
X=3+5/8
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