-9(a-4)=5(a-4)

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Solution for -9(a-4)=5(a-4) equation: 



-9(a-4)=5(a-4)

We move all terms to the left:

-9(a-4)-(5(a-4))=0

We multiply parentheses

-9a-(5(a-4))+36=0



We calculate terms in parentheses: -(5(a-4)), so:

5(a-4)

We multiply parentheses

5a-20

Back to the equation:

-(5a-20)



We get rid of parentheses

-9a-5a+20+36=0

We add all the numbers together, and all the variables

-14a+56=0

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

-14a=-56

a=-56/-14

a=+4

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