3s+5=20

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Solution for 3s+5=20 equation: 



3s+5=20

We move all terms to the left:

3s+5-(20)=0

We add all the numbers together, and all the variables

3s-15=0

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

3s=15

s=15/3

s=5

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