4(3a+1)=40

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Solution for 4(3a+1)=40 equation: 



4(3a+1)=40

We move all terms to the left:

4(3a+1)-(40)=0

We multiply parentheses

12a+4-40=0

We add all the numbers together, and all the variables

12a-36=0

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

12a=36

a=36/12

a=3

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