-3a=-45

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Solution for -3a=-45 equation: 



-3a=-45

We move all terms to the left:

-3a-(-45)=0

We add all the numbers together, and all the variables

-3a+45=0

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

-3a=-45

a=-45/-3

a=+15

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