1/2y=-9

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Solution for 1/2y=-9 equation: 


y in (-oo:+oo)

(1/2)*y = -9 // + 9

(1/2)*y+9 = 0

1/2*y+9 = 0 // - 9

1/2*y = -9 // : 1/2

y = -9/1/2

y = -18

y = -18

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