Найди значение выражений:а)2 4/5+4 2/3)*3 3/4:7 1/5, б) (4 2/3-3/7)*2 5/8:9

а) (14/5 + 14/3) * 15/4 : 36/5 = (42/15 + 70/15) * 15/4 * 5/36 = 35/9;

б) (14/3 - 3/7) * 21/8 : 89/9 = 89/21 * 21/8 * 9/89 =9/8;

в) (24/5 * 5/6 - 3/2) * 8/5 = (8/2 - 3/2) * 8/5 = 5/2 * 8/5 = 4;

г) (23/5 + 4/3) * 10/89 * 22/3 = 89/15 * 10/89 * 22/3 =44/9;

д) (9/21 - 28/21) * 21/86 * 5/37 = -19/21 * 21/86 * 5/37 =-95/3182;

е) (3 * 99/840 + 140 * 5/840) * 12/23 = 997/840 * 12/23 = 997/1610;

ж) (237/36 - 125/36) * 1/2 - 13/3 * 20/13 = 112/36 * 1/2 - 20/3 = 14/9 - 60/9 = -46/9;

з) (105/72 + 26/72) * 36/25 - 3/10 = 131/50 - 15/50 = 116/50;

и) 5/2 * 48 - 11/3 * 18 + 65/12 * 36/7 = 120 - 66 + 195/7 = 573/7;

к) 25/4 * 8 - 11/3 * 11/2 + 12/5 * 55/12 = 50 - 121/6 + 11 = 245/6.