2-4d=42

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Solution for 2-4d=42 equation: 


d in (-oo:+oo)

2-(4*d) = 42 // - 42

2-(4*d)-42 = 0

2-4*d-42 = 0

-4*d-40 = 0 // + 40

-4*d = 40 // : -4

d = 40/(-4)

d = -10

d = -10

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