9(q+1)=90

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Solution for 9(q+1)=90 equation: 



9(q+1)=90

We move all terms to the left:

9(q+1)-(90)=0

We multiply parentheses

9q+9-90=0

We add all the numbers together, and all the variables

9q-81=0

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

9q=81

q=81/9

q=9

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