23a-12-4a=-57

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Solution for 23a-12-4a=-57 equation: 



23a-12-4a=-57

We move all terms to the left:

23a-12-4a-(-57)=0

We add all the numbers together, and all the variables

19a+45=0

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

19a=-45

a=-45/19

a=-2+7/19

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