5s+-7s-2=-20

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Solution for 5s+-7s-2=-20 equation: 



5s+-7s-2=-20

We move all terms to the left:

5s+-7s-2-(-20)=0

We add all the numbers together, and all the variables

-2s+18=0

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

-2s=-18

s=-18/-2

s=+9

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