D/7-45=20

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Solution for D/7-45=20 equation: 


D in (-oo:+oo)

D/7-45 = 20 // - 20

D/7-45-20 = 0

1/7*D-65 = 0 // + 65

1/7*D = 65 // : 1/7

D = 65/1/7

D = 455

D = 455

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