21a-3=2

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Solution for 21a-3=2 equation: 



21a-3=2

We move all terms to the left:

21a-3-(2)=0

We add all the numbers together, and all the variables

21a-5=0

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

21a=5

a=5/21

a=5/21

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