4(a-9)=5(4-2a)

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Solution for 4(a-9)=5(4-2a) equation: 



4(a-9)=5(4-2a)

We move all terms to the left:

4(a-9)-(5(4-2a))=0

We add all the numbers together, and all the variables

4(a-9)-(5(-2a+4))=0

We multiply parentheses

4a-(5(-2a+4))-36=0



We calculate terms in parentheses: -(5(-2a+4)), so:

5(-2a+4)

We multiply parentheses

-10a+20

Back to the equation:

-(-10a+20)



We get rid of parentheses

4a+10a-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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