Question

9/14*x*1 17/25=3 5/75*y:2 5/9

Answer 1

6/13 + 4/13 - 8/13 = (6 + 4 - 8) / 13 = 2/13.
Ответ: 2/13.

б) 7 13/15 - (2 7/15 + 3 4/15) = 2 2/15.
1). 2 7/15 + 3 4/15 = 2 + 3 + 7/15 + 4/15 = 5 + (7 + 4) / 15 = 5 + 11/15 = 5 11/15;
2). 7 13/15 - 5 11/15 = 7 - 5 + 13/15 - 11/15 = 2 + (13 - 11) / 15 = 2 + 2/15 = 2 2/15.
Ответ: 2 2/15.

в) (9 12/25 - 8 16/25) + 4 17/25 = 5 13/25.
1). 9 12/25 - 8 16/25 = 237/25 - 216/25 = (237 - 216) / 25 = 21/25;
2). 21/25 + 4 17/25 = 21/25 + 117/25 = (21 + 117) / 25 = 138/25 = 5 13/25.
Ответ: 5 13/25.