-2a+5-2=-7

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



-2a+5-2=-7

We move all terms to the left:

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

We add all the numbers together, and all the variables

-2a+10=0

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

-2a=-10

a=-10/-2

a=+5

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