4s=9+7s

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Solution for 4s=9+7s equation: 



4s=9+7s

We move all terms to the left:

4s-(9+7s)=0

We add all the numbers together, and all the variables

4s-(7s+9)=0

We get rid of parentheses

4s-7s-9=0

We add all the numbers together, and all the variables

-3s-9=0

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

-3s=9

s=9/-3

s=-3

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