Пошаговое объяснение:
1) 4,5 - 2 1/3 = 4 5/10 - 2 1/3 = 4 15/30 - 2 10/30 = 2 5/30 = 2 1/6
2) 2 1/6 * 2 4/13 = 13/6 * 30/13 = 30/6 = 5
3) 1 1/3 : (-5,6) = 1 1/3 : (-5 6/10) = 1 1/3 : (-5 3/5) = 4/3 : (-28/5) = 4/3 * (-5/28) = - 20/84 = -5/21
3) 5 + (-5/21) = 5 - 5/21 = 4 21/21 - 5/21 = 4 16/21
Пошаговое объяснение:
1) 4,5 - 2 1/3 = 4 5/10 - 2 1/3 = 4 15/30 - 2 10/30 = 2 5/30 = 2 1/6
2) 2 1/6 * 2 4/13 = 13/6 * 30/13 = 30/6 = 5
3) 1 1/3 : (-5,6) = 1 1/3 : (-5 6/10) = 1 1/3 : (-5 3/5) = 4/3 : (-28/5) = 4/3 * (-5/28) = - 20/84 = -5/21
3) 5 + (-5/21) = 5 - 5/21 = 4 21/21 - 5/21 = 4 16/21