81=8q-15

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Solution for 81=8q-15 equation: 



81=8q-15

We move all terms to the left:

81-(8q-15)=0

We get rid of parentheses

-8q+15+81=0

We add all the numbers together, and all the variables

-8q+96=0

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

-8q=-96

q=-96/-8

q=+12

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