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w-7=(w+4)3
We move all terms to the left:
w-7-((w+4)3)=0
We calculate terms in parentheses: -((w+4)3), so:We get rid of parentheses
(w+4)3
We multiply parentheses
3w+12
Back to the equation:
-(3w+12)
w-3w-12-7=0
We add all the numbers together, and all the variables
-2w-19=0
We move all terms containing w to the left, all other terms to the right
-2w=19
w=19/-2
w=-9+1/2
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