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12.9g+40.5=92.10
We move all terms to the left:
12.9g+40.5-(92.10)=0
We add all the numbers together, and all the variables
12.9g+40.5-(92.1)=0
We add all the numbers together, and all the variables
12.9g-51.6=0
We move all terms containing g to the left, all other terms to the right
12.9g=51.6
g=51.6/12.9
g=4
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