7s-7s+5s=15

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Solution for 7s-7s+5s=15 equation: 



7s-7s+5s=15

We move all terms to the left:

7s-7s+5s-(15)=0

We add all the numbers together, and all the variables

5s-15=0

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

5s=15

s=15/5

s=3

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