21/2s+9=5-1/2s

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Solution for 21/2s+9=5-1/2s equation: 


s in (-oo:+oo)

(21/2)*s+9 = 5-((1/2)*s) // - 5-((1/2)*s)

(21/2)*s+(1/2)*s-5+9 = 0

11*s+4 = 0 // - 4

11*s = -4 // : 11

s = -4/11

s = -4/11

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