7-7s=49

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Solution for 7-7s=49 equation: 



7-7s=49

We move all terms to the left:

7-7s-(49)=0

We add all the numbers together, and all the variables

-7s-42=0

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

-7s=42

s=42/-7

s=-6

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