-3g-3=-21

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Solution for -3g-3=-21 equation: 



-3g-3=-21

We move all terms to the left:

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

We add all the numbers together, and all the variables

-3g+18=0

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

-3g=-18

g=-18/-3

g=+6

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