2s+39=s+40

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Solution for 2s+39=s+40 equation: 



2s+39=s+40

We move all terms to the left:

2s+39-(s+40)=0

We get rid of parentheses

2s-s-40+39=0

We add all the numbers together, and all the variables

s-1=0

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

s=1

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