3(a-1)=4

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Solution for 3(a-1)=4 equation: 



3(a-1)=4

We move all terms to the left:

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

We multiply parentheses

3a-3-4=0

We add all the numbers together, and all the variables

3a-7=0

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

3a=7

a=7/3

a=2+1/3

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