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-15x-2(x+2)=30
We move all terms to the left:
-15x-2(x+2)-(30)=0
We multiply parentheses
-15x-2x-4-30=0
We add all the numbers together, and all the variables
-17x-34=0
We move all terms containing x to the left, all other terms to the right
-17x=34
x=34/-17
x=-2
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