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2.3h=-13.8
We move all terms to the left:
2.3h-(-13.8)=0
We add all the numbers together, and all the variables
2.3h+13.8=0
We move all terms containing h to the left, all other terms to the right
2.3h=-13.8
h=-13.8/2.3
h=-6+1.7763568394003E-15/2.3
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