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42.19=8g+3.87
We move all terms to the left:
42.19-(8g+3.87)=0
We get rid of parentheses
-8g-3.87+42.19=0
We add all the numbers together, and all the variables
-8g+38.32=0
We move all terms containing g to the left, all other terms to the right
-8g=-38.32
g=-38.32/-8
g=4+2.7241379310345/3.448275862069
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