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9=-(h+2)
We move all terms to the left:
9-(-(h+2))=0
We calculate terms in parentheses: -(-(h+2)), so:We get rid of parentheses
-(h+2)
We get rid of parentheses
-h-2
We add all the numbers together, and all the variables
-1h-2
Back to the equation:
-(-1h-2)
1h+2+9=0
We add all the numbers together, and all the variables
h+11=0
We move all terms containing h to the left, all other terms to the right
h=-11
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