7/3s=21

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Solution for 7/3s=21 equation: 


s in (-oo:+oo)

(7/3)*s = 21 // - 21

(7/3)*s-21 = 0

7/3*s-21 = 0 // + 21

7/3*s = 21 // : 7/3

s = 21/7/3

s = 9

s = 9

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