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-h+1.8=11.9
We move all terms to the left:
-h+1.8-(11.9)=0
We add all the numbers together, and all the variables
-1h-10.1=0
We move all terms containing h to the left, all other terms to the right
-h=10.1
h=10.1/-1
h=-10+0.1/1
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