7d+2=-40

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Solution for 7d+2=-40 equation: 


d in (-oo:+oo)

7*d+2 = -40 // + 40

7*d+2+40 = 0

7*d+42 = 0 // - 42

7*d = -42 // : 7

d = -42/7

d = -6

d = -6

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