-10=10(a-9)

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Solution for -10=10(a-9) equation: 



-10=10(a-9)

We move all terms to the left:

-10-(10(a-9))=0



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

10(a-9)

We multiply parentheses

10a-90

Back to the equation:

-(10a-90)



We get rid of parentheses

-10a+90-10=0

We add all the numbers together, and all the variables

-10a+80=0

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

-10a=-80

a=-80/-10

a=+8

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