Пшмогите плиззз

1 задание (г)
2 задание (а) и (б)
И 3 задание

1 г,(1 5/18 - (2/3)²) * 3 4/15 - 2 1/24 = 49/72,1) (2/3)² = 4/9,2) 1 5/18 - 4/9 = 23/18 - 8/18 = 15/18 = 5/6,3) 5/6 * 3 4/15 = 5/6 * 49/15 = 49/18 = 2 13/18,4) 2 13/18 - 2 1/24 = 2 52/72 - 2 3/72 = 49/72,2.а) 2 2/21 * 3 1/2 х * 2 5/11 = 44/21 * 7/2 * 27/11 х = 2*9х = 18х,б) 1 2/13 * 3у * 2 3/5 = 15/13 * 3/1 * 13/5 у = 3 * 3у = 9у,3.1) 2 2/5 * 2 29/48 = 12/5 * 125/48 = 25/4 = 6 1/4 см - длина,2) 2 2/5 - 3/5 = 1 7/5 - 3/5 = 1 4/5 см - ширина,3) 2 2/5 * 6 1/4 * 1 4/5 = 12/5 * 25/4 * 9/5 = 3 * 9 = 27 см³ - объем