s/21-s/49=1/21

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Solution for s/21-s/49=1/21 equation: 


s in (-oo:+oo)

s/21-(s/49) = 1/21 // - 1/21

s/21-(s/49)-(1/21) = 0

s/21-(s/49)-1/21 = 0

4/147*s-1/21 = 0 // + 1/21

4/147*s = 1/21 // : 4/147

s = 1/21/4/147

s = 7/4

s = 7/4

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