Выполните сложение: а) 3/4 + 1/5; б) 1/36 + 5/12; в) 3/4 + 1/10; 7/15+1/5; 1/6+7/10; 1/3 + 1/4; 1/15+5/6; 1/5+56

Question

Математика

Алевтиныч

2 декабря, 01:29

Выполните сложение: а) 3/4 + 1/5; б) 1/36 + 5/12; в) 3/4 + 1/10; 7/15+1/5; 1/6+7/10; 1/3 + 1/4; 1/15+5/6; 1/5+56

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Конрад · Answer 1

а) 3/4 + 1/5; = 15/20 + 4/20 = 19/20

б) 1/36 + 5/12; = 1/36 + 15/36 = 16/36 = 4/9

в) 3/4 + 1/10; = 15/20 + 2/20 = 17/20

7/15+1/5; = 75/5 + 1/5 = 76/5 = 15

1/6+7/10; = 5/30 + 21/30 = 26/30 = 13/15

1/3 + 1/4; = 4/12 + 3/12 = 7/12

1/15+5/6; = 2/30 + 25/30 = 27/30 = 9/10

1/5+56 = 1/5 + 280/5 = 281/5 = 56 2/10