20=10(q-9)

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Solution for 20=10(q-9) equation: 



20=10(q-9)

We move all terms to the left:

20-(10(q-9))=0



We calculate terms in parentheses: -(10(q-9)), so:

10(q-9)

We multiply parentheses

10q-90

Back to the equation:

-(10q-90)



We get rid of parentheses

-10q+90+20=0

We add all the numbers together, and all the variables

-10q+110=0

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

-10q=-110

q=-110/-10

q=+11

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