4(1+5a)=64

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Solution for 4(1+5a)=64 equation: 



4(1+5a)=64

We move all terms to the left:

4(1+5a)-(64)=0

We add all the numbers together, and all the variables

4(5a+1)-64=0

We multiply parentheses

20a+4-64=0

We add all the numbers together, and all the variables

20a-60=0

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

20a=60

a=60/20

a=3

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