2(s+9)=20

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Solution for 2(s+9)=20 equation: 



2(s+9)=20

We move all terms to the left:

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

We multiply parentheses

2s+18-20=0

We add all the numbers together, and all the variables

2s-2=0

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

2s=2

s=2/2

s=1

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