15g+9=-3g-9

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Solution for 15g+9=-3g-9 equation: 



15g+9=-3g-9

We move all terms to the left:

15g+9-(-3g-9)=0

We get rid of parentheses

15g+3g+9+9=0

We add all the numbers together, and all the variables

18g+18=0

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

18g=-18

g=-18/18

g=-1

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