а) x = 7/8 * (9/7) = 63/56 = 1.125
б) 3 3/4 ÷ 1 1/8 = (15/4) ÷ (9/8) = 15/4 * 8/9 = 120/36 = 10/3 = 3 1/3
в) 39.1 ÷ x = 18.63 ÷ 40.539.1 40.5 = 18.63 x1584.55 = 18.63xx = 1584.55 / 18.63x ≈ 85.06
а) x = 7/8 * (9/7) = 63/56 = 1.125
б) 3 3/4 ÷ 1 1/8 = (15/4) ÷ (9/8) = 15/4 * 8/9 = 120/36 = 10/3 = 3 1/3
в) 39.1 ÷ x = 18.63 ÷ 40.5
39.1 40.5 = 18.63 x
1584.55 = 18.63x
x = 1584.55 / 18.63
x ≈ 85.06