6a+2(-2a-7)=-28

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Solution for 6a+2(-2a-7)=-28 equation: 



6a+2(-2a-7)=-28

We move all terms to the left:

6a+2(-2a-7)-(-28)=0

We add all the numbers together, and all the variables

6a+2(-2a-7)+28=0

We multiply parentheses

6a-4a-14+28=0

We add all the numbers together, and all the variables

2a+14=0

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

2a=-14

a=-14/2

a=-7

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