21=3.14x

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Solution for 21=3.14x equation: 



21=3.14x

We move all terms to the left:

21-(3.14x)=0

We add all the numbers together, and all the variables

-(+3.14x)+21=0

We get rid of parentheses

-3.14x+21=0

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

-3.14x=-21

x=-21/-3.14

x=6+2.16/3.14

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