Раскройте скобки: 1) 14 * (1/2 m + 3/7 n); 3) 8 * (1/4 p - 5/24 q + 7/12 t); 2) 1/6 * (12/17 b - 18/23 c); 4) 1 3/4 *

1) 14 * (1/2 m + 3/7 n)=14 * 1/2 m + 14 * 3/7 n=7m + 6n 2) 1/6 * (12/17 b - 18/23 c)=1/6 * 12/17 b - 1/6 * 18/23 c=2/17 b - 3/23 c; 3) 8 * (1/4 p - 5/24 q + 7/12 t)=8 * 1/4 p - 8 * 5/24 q + 8 * 7/12 t=2 p - 5/3 q + 14/3 t=2 p - 1 2/3 q + 4 2/3 t;4) 1 3/4 * (4a + 16/21 b - 2 2/3)=7/4 * 4a + 7/4 * 16/21 b - 7/4 * 8/3=7a + 4/3 b - 14/3=7a + 1 1/3 b - 4 2/3.