-6a-4a=-20

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Solution for -6a-4a=-20 equation: 



-6a-4a=-20

We move all terms to the left:

-6a-4a-(-20)=0

We add all the numbers together, and all the variables

-10a+20=0

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

-10a=-20

a=-20/-10

a=+2

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