90=3(q+12)

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Solution for 90=3(q+12) equation: 



90=3(q+12)

We move all terms to the left:

90-(3(q+12))=0



We calculate terms in parentheses: -(3(q+12)), so:

3(q+12)

We multiply parentheses

3q+36

Back to the equation:

-(3q+36)



We get rid of parentheses

-3q-36+90=0

We add all the numbers together, and all the variables

-3q+54=0

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

-3q=-54

q=-54/-3

q=+18

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