21=4Qs/3

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Solution for 21=4Qs/3 equation: 



21=4Q/3

We move all terms to the left:

21-(4Q/3)=0

We add all the numbers together, and all the variables

-(+4Q/3)+21=0

We get rid of parentheses

-4Q/3+21=0

We multiply all the terms by the denominator


-4Q+21*3=0

We add all the numbers together, and all the variables

-4Q+63=0

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

-4Q=-63

Q=-63/-4

Q=15+3/4

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