3/5-21=a

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Solution for 3/5-21=a equation: 



3/5-21=a

We move all terms to the left:

3/5-21-(a)=0

We add all the numbers together, and all the variables

-1a-21+3/5=0

We multiply all the terms by the denominator


-1a*5+3-21*5=0

We add all the numbers together, and all the variables

-1a*5-102=0

Wy multiply elements

-5a-102=0

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

-5a=102

a=102/-5

a=-20+2/5

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