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3(h+4)=-12
We move all terms to the left:
3(h+4)-(-12)=0
We add all the numbers together, and all the variables
3(h+4)+12=0
We multiply parentheses
3h+12+12=0
We add all the numbers together, and all the variables
3h+24=0
We move all terms containing h to the left, all other terms to the right
3h=-24
h=-24/3
h=-8
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