1) 4 11/15+2 7/20=

2) 5 2/7-4 11/14=

Question

Математика

Людаша

6 июня, 07:49

1) 4 11/15+2 7/20=

2) 5 2/7-4 11/14=

+2

Ответы (1)

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Наша · Answer 1

1)

4 11/15 + 2 7/20 = (4 + 2) + (11/15 + 7/20) =

= 6 + (44/60 + 21/60) = 6 + 65/60 = 6 + 1 5/60 = 6 + 1 1/12 = 7 1/12,

2)

5 2/7 - 4 11/14 = (5 - 4) + (2/7 - 11/14) =

= 1 + (4/14 - 11/14) = 1 - 7/14 = 1 - 1/2 = 1/2

1) 4 11/15+2 7/20=2) 5 2/7-4 11/14=

1) 4 11/15+2 7/20=

2) 5 2/7-4 11/14=