-7/11*1 5/17 : (-0,75)=1 5/51
1)- 7/11 * 1 5/17 = - 7/11 * 22/17 = - 14/17
2) - 14/17 :(- 0,75)- 14/17 : (- 75/100) = - 14/17 : (- 3/4) = - 14/17 *(- 4/3) = 56/51 = 1 5/51
ОТВЕТ1 5/51
(1,2 - 2 7/25): 1 2/25 + 1 4/13=4/13
1)1,2-2 7/25=1 2/10 - 2 7/25 = 6/5 - 57/25 =(6 × 5 - 57 × 1)/25 = 30/25 - 57/25 = - 27/25 = - 1 2/25
2)- 1 2/25 : 1 2/25 = - 27/25 : 27/25 = - 27/25 * 25/27 = - 1
3)- 1 + 1 4/13 = - 1 + 17/13 =(-1 × 13 + 17 × 1)/13 = -13/13 + 17/13 = 4/13
ОТВЕТ 4/13