20-7s=-18-18s-17

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Solution for 20-7s=-18-18s-17 equation: 



20-7s=-18-18s-17

We move all terms to the left:

20-7s-(-18-18s-17)=0

We add all the numbers together, and all the variables

-7s-(-18s-35)+20=0

We get rid of parentheses

-7s+18s+35+20=0

We add all the numbers together, and all the variables

11s+55=0

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

11s=-55

s=-55/11

s=-5

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