3(a+2)-4=20

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Solution for 3(a+2)-4=20 equation: 



3(a+2)-4=20

We move all terms to the left:

3(a+2)-4-(20)=0

We add all the numbers together, and all the variables

3(a+2)-24=0

We multiply parentheses

3a+6-24=0

We add all the numbers together, and all the variables

3a-18=0

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

3a=18

a=18/3

a=6

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