9a=4(a+10)

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Solution for 9a=4(a+10) equation: 



9a=4(a+10)

We move all terms to the left:

9a-(4(a+10))=0



We calculate terms in parentheses: -(4(a+10)), so:

4(a+10)

We multiply parentheses

4a+40

Back to the equation:

-(4a+40)



We get rid of parentheses

9a-4a-40=0

We add all the numbers together, and all the variables

5a-40=0

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

5a=40

a=40/5

a=8

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