4(a-1)=72

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Solution for 4(a-1)=72 equation: 



4(a-1)=72

We move all terms to the left:

4(a-1)-(72)=0

We multiply parentheses

4a-4-72=0

We add all the numbers together, and all the variables

4a-76=0

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

4a=76

a=76/4

a=19

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