3s-15=30

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Solution for 3s-15=30 equation: 



3s-15=30

We move all terms to the left:

3s-15-(30)=0

We add all the numbers together, and all the variables

3s-45=0

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

3s=45

s=45/3

s=15

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