7d-4=45

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Solution for 7d-4=45 equation: 


d in (-oo:+oo)

7*d-4 = 45 // - 45

7*d-45-4 = 0

7*d-49 = 0 // + 49

7*d = 49 // : 7

d = 49/7

d = 7

d = 7

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