s+3s+9s+(-17s)=20

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Solution for s+3s+9s+(-17s)=20 equation: 



s+3s+9s+(-17s)=20

We move all terms to the left:

s+3s+9s+(-17s)-(20)=0

We add all the numbers together, and all the variables

13s+(-17s)-20=0

We get rid of parentheses

13s-17s-20=0

We add all the numbers together, and all the variables

-4s-20=0

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

-4s=20

s=20/-4

s=-5

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