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7=-5(3+w)+7
We move all terms to the left:
7-(-5(3+w)+7)=0
We add all the numbers together, and all the variables
-(-5(w+3)+7)+7=0
We calculate terms in parentheses: -(-5(w+3)+7), so:We get rid of parentheses
-5(w+3)+7
We multiply parentheses
-5w-15+7
We add all the numbers together, and all the variables
-5w-8
Back to the equation:
-(-5w-8)
5w+8+7=0
We add all the numbers together, and all the variables
5w+15=0
We move all terms containing w to the left, all other terms to the right
5w=-15
w=-15/5
w=-3
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