s+(31/2)*s+20=47

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Solution for s+(31/2)*s+20=47 equation:


s in (-oo:+oo)

s+(31/2)*s+20 = 47 // - 47

s+(31/2)*s-47+20 = 0

33/2*s-27 = 0 // + 27

33/2*s = 27 // : 33/2

s = 27/33/2

s = 18/11

s = 18/11

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