Question

Вычислите а)3/5+1/15 б)3/16+5/8 в)7/9-13/18 г)7/9-2/3 а)4/5+2/3 б)5/6+7/9 в)3/4-1/6 г)7/8-5/5

Answer 1

Ответ:

І

а)3/5+1/15 = 9/15+1/15=10/15=2/3

б)3/16+5/8=3/16+10/16=13/16

в)7/9-13/18= 14/18-13/18=1/18

г)7/9-2/3 = 7/9 - 6/9 = 1/9

ІІ

а)4/5+2/3 = 12/15 + 10/15 = 22/15 = 1 7/15

б)5/6+7/9 = 15/18 + 14/18 = 29/18 = 1 11/18

в)3/4-1/6 = 9/12 - 2/12 = 7/12

г)7/8-5/8 = 2/8 = 1/4

Answer 2

а) 3/5 + 1/15 = 9/15 + 1/15 = 10/15 = 2/3 б) 3/16 + 5/8 = 3/16 + 10/16 = 13/16 в) 7/9 - 13/18 = 14/18 - 13/18 = 1/18 г) 7/9 - 2/3 = 14/18 - 12/18 = 2/18 = 1/9

а) 4/5 + 2/3 = 12/15 + 10/15 = 22/15 = 1 7/15 б) 5/6 + 7/9 = 15/18 + 14/18 = 29/18 = 1 11/18 в) 3/4 - 1/6 = 9/12 - 2/12 = 7/12 г) 7/8 - 5/5 = 7/8 - 1 = 7/8 - 8/8 = -1/8