21/2y=-5/2

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Solution for 21/2y=-5/2 equation: 


y in (-oo:+oo)

(21/2)*y = -5/2 // + -5/2

(21/2)*y-(-5/2) = 0

(21/2)*y+5/2 = 0

21/2*y+5/2 = 0 // - 5/2

21/2*y = -5/2 // : 21/2

y = -5/2/21/2

y = -5/21

y = -5/21

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