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(0)=21.5-2G
We move all terms to the left:
(0)-(21.5-2G)=0
We add all the numbers together, and all the variables
-(-2G+21.5)+0=0
We add all the numbers together, and all the variables
-(-2G+21.5)=0
We get rid of parentheses
2G-21.5=0
We move all terms containing G to the left, all other terms to the right
2G=21.5
G=21.5/2
G=10+1/1.3333333333333
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