Нужно решить примеры по ! 1) 9 1/4 * 8 - 3 2/3 * 4 1/2 - 10 4/5 - 4 7/12 2) (3 1/4 + 2 1/6) : 2 3/5 - 2/3 : 4/9 большое заранее!

(1)
1) 37/4 • 8 = 296/4 = 74;
2) 74 - 11/3 = 222/3 - 11/3 = 211/3;
3) 211/3 • 9/2 = 211•3/2 = 633/2;
4) 633/2 - 54/5 = 3165-108/10 = 3057/10;
5) 3057/10 - 55/12 = 18342-330/60 = 18012/60 = 9006/30 = 3002/10 = 1501/5;
(2)
1) 3 1/4 + 2 1/6 = 13/4 + 13/6 = 39+26/12 = 65/12;
2) 65/12 : 2 3/5 = 65•5/12•13 = 3•5/12 = 5/4 = 1 1/4;
3) 1 1/4 - 2/3 = 5/4 - 2/3 = 15-8/12 = 7/12;
4) 7/12 : 4/9 = 7•9/12•4 = 7•3/4•4 = 21/16