Пошаговое объяснение:
1) 2,75 :1,1 = 2,5
2) 2,5 + 3 1/3 = 25/10 + 10/3 = 25*3/10*3 + 10*10/10*3 = 75/30 + 100/30 = 175/30
3) 0,4 * (-3 1/3) = 0,4 * (-10/3) = -4/3
4) 2,5 - (-4/3) = 25/10 + 4/3 = 25*3/10*3 + 4*10/3*10 = 75/30 + 40/30 = 115/30
5) 175/30 : 115/30 = 175/30 * 30/115 = 175/115 = 5*35/5*23 = 35/23 = 1 12/23
Пошаговое объяснение:
1) 2,75 :1,1 = 2,5
2) 2,5 + 3 1/3 = 25/10 + 10/3 = 25*3/10*3 + 10*10/10*3 = 75/30 + 100/30 = 175/30
3) 0,4 * (-3 1/3) = 0,4 * (-10/3) = -4/3
4) 2,5 - (-4/3) = 25/10 + 4/3 = 25*3/10*3 + 4*10/3*10 = 75/30 + 40/30 = 115/30
5) 175/30 : 115/30 = 175/30 * 30/115 = 175/115 = 5*35/5*23 = 35/23 = 1 12/23