2(1d+9)=-2

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Solution for 2(1d+9)=-2 equation: 


d in (-oo:+oo)

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

2*(1*d+9)+2 = 0

2*(d+9)+2 = 0

2*(d+9)+2 = 0

2*d+20 = 0

2*d+20 = 0

2*d+20 = 0 // - 20

2*d = -20 // : 2

d = -20/2

d = -10

d = -10

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