4-21/s=1

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Solution for 4-21/s=1 equation: 



4-21/s=1

We move all terms to the left:

4-21/s-(1)=0



Domain of the equation: s!=0

s∈R



We add all the numbers together, and all the variables

-21/s+3=0

We multiply all the terms by the denominator


3*s-21=0

We add all the numbers together, and all the variables

3s-21=0

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

3s=21

s=21/3

s=7

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