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marin [14]
3 years ago
8

ANSWER NUMBER 7 FOR 20 POINTS

Mathematics
1 answer:
pashok25 [27]3 years ago
6 0
#7

d/2 +d/5 + d/3 = 3
(15d + 6d + 10d) / 30 = 3
15d + 6d + 10d = 90
31d = 90
d = 90/31
d = 2 28/31

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