Раскройте скобки: 1) 6 * (2/3 a + 5/12 b); 3) 12 * (3/4 x + 13/18 y - 1/24 z); 2) 1/3 * (9/11 m - 6/7 n); 4) 1 1/7 *

1) 6 * (2/3 a + 5/12 b)=6 * 2/3 a + 6 * 5/12 b=4a + 2 1/2 b; 2) 1/3 * (9/11 m - 6/7 n)=1/3 * 9/11 m - 1/3 * 6/7 n=3/11 m - 2/7 n; 3) 12 * (3/4 x + 13/18 y - 1/24 z)=12 * 3/4 x + 12 * 13/18 y - 12 * 1/24 z=9х +26/3 у - 1/2 z=9х +8 2/3 у - 1/2 z;4) 1 1/7 * (7p + 21/24 q - 1 3/4)=1 1/7 * 7p + 1 1/7 * 21/24 q - 1 1/7 * 1 3/4=8/7 * 7p + 8/7 * 21/24 q - 8/7 * 7/4=8p + q - 2.