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144=-12(x+5)=
We move all terms to the left:
144-(-12(x+5))=0
We calculate terms in parentheses: -(-12(x+5)), so:We get rid of parentheses
-12(x+5)
We multiply parentheses
-12x-60
Back to the equation:
-(-12x-60)
12x+60+144=0
We add all the numbers together, and all the variables
12x+204=0
We move all terms containing x to the left, all other terms to the right
12x=-204
x=-204/12
x=-17
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