Вычислите удобным способом: 3/5:(7/60):(-3 11/15)*1 2/3
3/5 ÷(7/60) ÷(-3 11/5) ×1 2/3 = -1 59/91 1) 3/5 ÷ 7/60 = 180/35 = 36 • 5/7 • 5 = 5 1/7 2)5 1/7 ÷ - 3 11/5 = 36/7 ÷ - 26/5 = - 180/182 = - 90 • 2/91 • 2 = - 90/91 3) - 90/91 × 1 2/3 = - 90/91 × 5/3 = - 450/273 = - 150 • 3/91 • 3 = - 1 59/91