9+2d=-11

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Solution for 9+2d=-11 equation: 


d in (-oo:+oo)

2*d+9 = -11 // + 11

2*d+9+11 = 0

2*d+20 = 0 // - 20

2*d = -20 // : 2

d = -20/2

d = -10

d = -10

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