3(g-1)=21

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Solution for 3(g-1)=21 equation: 



3(g-1)=21

We move all terms to the left:

3(g-1)-(21)=0

We multiply parentheses

3g-3-21=0

We add all the numbers together, and all the variables

3g-24=0

We move all terms containing g to the left, all other terms to the right

3g=24

g=24/3

g=8

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