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-(2y+7)=-18
We move all terms to the left:
-(2y+7)-(-18)=0
We add all the numbers together, and all the variables
-(2y+7)+18=0
We get rid of parentheses
-2y-7+18=0
We add all the numbers together, and all the variables
-2y+11=0
We move all terms containing y to the left, all other terms to the right
-2y=-11
y=-11/-2
y=5+1/2
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