12a-21=37

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Solution for 12a-21=37 equation: 



12a-21=37

We move all terms to the left:

12a-21-(37)=0

We add all the numbers together, and all the variables

12a-58=0

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

12a=58

a=58/12

a=4+5/6

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