7d+9=-19

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Solution for 7d+9=-19 equation: 


d in (-oo:+oo)

7*d+9 = -19 // + 19

7*d+9+19 = 0

7*d+28 = 0 // - 28

7*d = -28 // : 7

d = -28/7

d = -4

d = -4

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