3-4a=-57

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Solution for 3-4a=-57 equation: 



3-4a=-57

We move all terms to the left:

3-4a-(-57)=0

We add all the numbers together, and all the variables

-4a+60=0

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

-4a=-60

a=-60/-4

a=+15

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