1. Найдите значение выражения: а) 6 – 2 10/13 ; в) 4 11/12 + 5 13/18 ; б) 7 3/8 + 1 7/10 ; г) 9 2/9 – 6 5/6 . 2. В один

1.а) 6 - (2 * 13 + 10)/13 = 6 - 36/13 = 78/13 - 36/13 = 42/13;

в) (4 * 12 + 11)/12 + (5 * 18 + 13)/18 = 59/12 + 103/18 = 177/36 + 206/36 = 383/36;

б) (7 * 8 + 3)/8 + (1 * 10 + 7)/10 = 59/8 + 17/10 = 590/80 + 136/80 = 726/80 = 363/40;

г) (9 * 9 + 2)/9 - (6 * 6 + 5)/6 = 83/9 - 41/6 = 166/18 - 123/18 = 43/18;

2. 5 7/16 + 3 5/12 - 1 1/6 = (5 * 16 + 7)/16 + (3 * 12 + 5)/12 - (6 + 1)/6 = 87/16 + 41/12 - 7/6 = 261/48 + 164/48 - 56/48 = 123/16;

3.а) b = (7 * 12 + 5)/12 - (5 * 10 + 9)/10 = 89/12 - 59/10 = 182/120 = 91/60;

б) d = 8,47/3,85 + 4,02 = 121/55 + 4,02 = 6,22.

4. 19/45 = 5/45 + 5/45 + 9/45 = 1/9 + 1/9 + 1/5.