5-a-12=23

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Solution for 5-a-12=23 equation: 



5-a-12=23

We move all terms to the left:

5-a-12-(23)=0

We add all the numbers together, and all the variables

-1a-30=0

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

-a=30

a=30/-1

a=-30

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