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42.90=9g+3.93
We move all terms to the left:
42.90-(9g+3.93)=0
We add all the numbers together, and all the variables
-(9g+3.93)+42.9=0
We get rid of parentheses
-9g-3.93+42.9=0
We add all the numbers together, and all the variables
-9g+38.97=0
We move all terms containing g to the left, all other terms to the right
-9g=-38.97
g=-38.97/-9
g=4+2.97/9
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