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-7(x+1)=12
We move all terms to the left:
-7(x+1)-(12)=0
We multiply parentheses
-7x-7-12=0
We add all the numbers together, and all the variables
-7x-19=0
We move all terms containing x to the left, all other terms to the right
-7x=19
x=19/-7
x=-2+5/7
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