4a+2(3a-1)=28

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Solution for 4a+2(3a-1)=28 equation: 



4a+2(3a-1)=28

We move all terms to the left:

4a+2(3a-1)-(28)=0

We multiply parentheses

4a+6a-2-28=0

We add all the numbers together, and all the variables

10a-30=0

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

10a=30

a=30/10

a=3

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