4(a-9)=16

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Solution for 4(a-9)=16 equation: 



4(a-9)=16

We move all terms to the left:

4(a-9)-(16)=0

We multiply parentheses

4a-36-16=0

We add all the numbers together, and all the variables

4a-52=0

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

4a=52

a=52/4

a=13

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