36=20-4(a+5)

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Solution for 36=20-4(a+5) equation: 



36=20-4(a+5)

We move all terms to the left:

36-(20-4(a+5))=0



We calculate terms in parentheses: -(20-4(a+5)), so:

20-4(a+5)

determiningTheFunctionDomain
-4(a+5)+20

We multiply parentheses

-4a-20+20

We add all the numbers together, and all the variables

-4a

Back to the equation:

-(-4a)



We get rid of parentheses

4a+36=0

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

4a=-36

a=-36/4

a=-9

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