-5a-2a=7

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Solution for -5a-2a=7 equation: 



-5a-2a=7

We move all terms to the left:

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

We add all the numbers together, and all the variables

-7a-7=0

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

-7a=7

a=7/-7

a=-1

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