Найдите значение выражения: а) 3 3/7+1 3/14 * (8 3/5-1 3/5) б) 2 5/9*2 1/4-6 2/9*3/8 в) (6 2/5*2 11/12-16) * 2 1/4

а) 3 3/7 + 1 3/14 * (8 3/5 - 1 3/5) = 24/7 + 17/14 * (43/5 - 8/5) = 24/7 + 17/14 * 35/5 = 24/7 +

17/14 * 7 = 24/7 + 119/14 = 48/14 + 119/14 = 167/14 = 11 13/14;

б) 2 5/9 * 2 1/4 - 6 2/9 * 3/8 = 23/9 * 9/4 - 56/9 * 3/8 = 23/4 - 7/3 = 69/12 - 28/12 = 41/12 =

= 3 5/12;

в) (6 2/5 * 2 11/12 - 16) * 2 1/4 = (32/5 * 35/12 - 16) * 9/4 = (56/3 - 48/3) * 9/4 = 8/3 * 9/4 =

= 72/12 = 6.