-2s=-9+7s

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Solution for -2s=-9+7s equation: 



-2s=-9+7s

We move all terms to the left:

-2s-(-9+7s)=0

We add all the numbers together, and all the variables

-2s-(7s-9)=0

We get rid of parentheses

-2s-7s+9=0

We add all the numbers together, and all the variables

-9s+9=0

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

-9s=-9

s=-9/-9

s=1

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