57*21=a

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Solution for 57*21=a equation: 



57*21=a

We move all terms to the left:

57*21-(a)=0

We add all the numbers together, and all the variables

-1a+1197=0

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

-a=-1197

a=-1197/-1

a=+1197

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