-7g+7=-21

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Solution for -7g+7=-21 equation: 



-7g+7=-21

We move all terms to the left:

-7g+7-(-21)=0

We add all the numbers together, and all the variables

-7g+28=0

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

-7g=-28

g=-28/-7

g=+4

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