21-7s=19-6s

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Solution for 21-7s=19-6s equation: 



21-7s=19-6s

We move all terms to the left:

21-7s-(19-6s)=0

We add all the numbers together, and all the variables

-7s-(-6s+19)+21=0

We get rid of parentheses

-7s+6s-19+21=0

We add all the numbers together, and all the variables

-1s+2=0

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

-s=-2

s=-2/-1

s=+2

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