A=5(a-9)

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Solution for A=5(a-9) equation: 



=5(A-9)

We move all terms to the left:

-(5(A-9))=0



We calculate terms in parentheses: -(5(A-9)), so:

5(A-9)

We multiply parentheses

5A-45

Back to the equation:

-(5A-45)



We get rid of parentheses

-5A+45=0

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

-5A=-45

A=-45/-5

A=+9

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