5g-15=2g+21

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Solution for 5g-15=2g+21 equation: 



5g-15=2g+21

We move all terms to the left:

5g-15-(2g+21)=0

We get rid of parentheses

5g-2g-21-15=0

We add all the numbers together, and all the variables

3g-36=0

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

3g=36

g=36/3

g=12

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