-17=-5a-7

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Solution for -17=-5a-7 equation: 



-17=-5a-7

We move all terms to the left:

-17-(-5a-7)=0

We get rid of parentheses

5a+7-17=0

We add all the numbers together, and all the variables

5a-10=0

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

5a=10

a=10/5

a=2

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