Нужно решить по действиям
1) 40 1/2 = 81/2 2)81/2 ÷ 9 = 81/2·9 = 81/18 = 9/2 3) 9/2 * 2 = 9 4) 6.52 = 6 52/100 - 11 1/50 = 6 52/100 - 11 2/100 = -4 1/2 5) 9: (-4 1/2) = 9: (-9/2) = 9: (-2/9) = -2