-2a-4=40

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Solution for -2a-4=40 equation: 



-2a-4=40

We move all terms to the left:

-2a-4-(40)=0

We add all the numbers together, and all the variables

-2a-44=0

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

-2a=44

a=44/-2

a=-22

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