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-4=2(x-18)
We move all terms to the left:
-4-(2(x-18))=0
We calculate terms in parentheses: -(2(x-18)), so:We get rid of parentheses
2(x-18)
We multiply parentheses
2x-36
Back to the equation:
-(2x-36)
-2x+36-4=0
We add all the numbers together, and all the variables
-2x+32=0
We move all terms containing x to the left, all other terms to the right
-2x=-32
x=-32/-2
x=+16
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