21s-1=23s-3

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Solution for 21s-1=23s-3 equation: 



21s-1=23s-3

We move all terms to the left:

21s-1-(23s-3)=0

We get rid of parentheses

21s-23s+3-1=0

We add all the numbers together, and all the variables

-2s+2=0

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

-2s=-2

s=-2/-2

s=1

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