7s+9=7+9s

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Solution for 7s+9=7+9s equation: 



7s+9=7+9s

We move all terms to the left:

7s+9-(7+9s)=0

We add all the numbers together, and all the variables

7s-(9s+7)+9=0

We get rid of parentheses

7s-9s-7+9=0

We add all the numbers together, and all the variables

-2s+2=0

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

-2s=-2

s=-2/-2

s=1

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