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45+g/2=54
We move all terms to the left:
45+g/2-(54)=0
We add all the numbers together, and all the variables
g/2-9=0
We multiply all the terms by the denominator
g-9*2=0
We add all the numbers together, and all the variables
g-18=0
We move all terms containing g to the left, all other terms to the right
g=18
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