2s+4-9=-20

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Solution for 2s+4-9=-20 equation: 



2s+4-9=-20

We move all terms to the left:

2s+4-9-(-20)=0

We add all the numbers together, and all the variables

2s+15=0

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

2s=-15

s=-15/2

s=-7+1/2

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