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12.78=2g+3.84
We move all terms to the left:
12.78-(2g+3.84)=0
We get rid of parentheses
-2g-3.84+12.78=0
We add all the numbers together, and all the variables
-2g+8.94=0
We move all terms containing g to the left, all other terms to the right
-2g=-8.94
g=-8.94/-2
g=4+0.94/2
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