-2(-5a-7)=28

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Solution for -2(-5a-7)=28 equation: 



-2(-5a-7)=28

We move all terms to the left:

-2(-5a-7)-(28)=0

We multiply parentheses

10a+14-28=0

We add all the numbers together, and all the variables

10a-14=0

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

10a=14

a=14/10

a=1+2/5

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