-20a-15=7

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Solution for -20a-15=7 equation: 



-20a-15=7

We move all terms to the left:

-20a-15-(7)=0

We add all the numbers together, and all the variables

-20a-22=0

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

-20a=22

a=22/-20

a=-1+1/10

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