4a+12-2(a+6)=20

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Solution for 4a+12-2(a+6)=20 equation: 



4a+12-2(a+6)=20

We move all terms to the left:

4a+12-2(a+6)-(20)=0

We add all the numbers together, and all the variables

4a-2(a+6)-8=0

We multiply parentheses

4a-2a-12-8=0

We add all the numbers together, and all the variables

2a-20=0

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

2a=20

a=20/2

a=10

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