8-7d=31/10

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Solution for 8-7d=31/10 equation: 


d in (-oo:+oo)

8-(7*d) = 31/10 // - 31/10

8-(7*d)-(31/10) = 0

8-7*d-31/10 = 0

49/10-7*d = 0 // - 49/10

-7*d = -49/10 // : -7

d = -49/10/(-7)

d = 7/10

d = 7/10

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