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9=h-21/6
We move all terms to the left:
9-(h-21/6)=0
We add all the numbers together, and all the variables
-(+h-21/6)+9=0
We get rid of parentheses
-h+9+21/6=0
We multiply all the terms by the denominator
-h*6+21+9*6=0
We add all the numbers together, and all the variables
-h*6+75=0
Wy multiply elements
-6h+75=0
We move all terms containing h to the left, all other terms to the right
-6h=-75
h=-75/-6
h=12+1/2
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