20-4s=9s

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Solution for 20-4s=9s equation: 



20-4s=9s

We move all terms to the left:

20-4s-(9s)=0

We add all the numbers together, and all the variables

-13s+20=0

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

-13s=-20

s=-20/-13

s=1+7/13

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