2 целых 4/15-4 целых1/5 * (1 целая5/6-41/42) = ?

Question

Математика

Эма

9 мая, 01:36

2 целых 4/15-4 целых1/5 * (1 целая5/6-41/42) = ?

+4

Ответы (2)

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Галуша · Answer 1

=34/15 - 21/5 * (11/6 - 41/42) = 34/15 - 21/5 * 6/7=34/15 - 18/30=50/30=1 целая 2/3

Милослава · Answer 2

2 4/15 - 4 1/5 * (1 5/6 - 41/42) = 2 4/15 - 4 1/5 * (11/6 - 41/42) = 2 4/15 - 4 1/5 * (77/42 - 41/42) = 2 4/15 - 4 1/5*36/42 = 2 4/15 - 21/5 * 6/7 = 2 4/15 - 126/35 = 2 4/15 - 18/5 = 2 4/15 - 3 3/5 = 2 4/15 - 3 9/15 = - 1 5/15 = - 1 1/3