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=2.9H+78.1
We move all terms to the left:
-(2.9H+78.1)=0
We get rid of parentheses
-2.9H-78.1=0
We move all terms containing H to the left, all other terms to the right
-2.9H=78.1
H=78.1/-2.9
H=-26+1/1.0740740740741
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