joli2020
joli2020
03-08-2017
Mathematics
contestada
Please help on this one!
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texaschic101
texaschic101
03-08-2017
n / (8/11) = (2 1/5) / (1 1/7) =
n / (8/11) = (11/5) / (8/7) =
cross multiply
(8/7)(n) = (8/11)(11/5)
8/7n = 8/5
n = 8/5 * 7/8
n = 56/40 which reduces to 7/5 or 1 2/5 <==
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Аноним
Аноним
03-08-2017
2 1/5 / 1 1/7 = 11/5 / 8/7 = 11/5 * 7/8 = 77 / 40
n / 8/11 = n * 11 /8 = 11n / 8
11n / 8 = 77/40
55n/40 = 77/40
55n = 77
n = 77/55 = 7/5
Answer Link
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