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7-8(1-4h)=21
We move all terms to the left:
7-8(1-4h)-(21)=0
We add all the numbers together, and all the variables
-8(-4h+1)+7-21=0
We add all the numbers together, and all the variables
-8(-4h+1)-14=0
We multiply parentheses
32h-8-14=0
We add all the numbers together, and all the variables
32h-22=0
We move all terms containing h to the left, all other terms to the right
32h=22
h=22/32
h=11/16
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