21s/21=3/21

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Solution for 21s/21=3/21 equation: 


s in (-oo:+oo)

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

(21*s)/21-(3/21) = 0

(21*s)/21-1/7 = 0

s-1/7 = 0 // + 1/7

s = 1/7

s = 1/7

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