1/2 * 43 - 3 2/3 * 1/18 + 5 5/12 * 7/36 = 22 151/432
1) 1/2 * 43 = 43/2 = 21 1/2
2) 3 2/3 * 1/18 = 11/3 * 1/18 = 11/54
3) 5 5/12 * 7/36 = 65/12 * 7/36 = 455/432 = 1 23/432
4) 21 1/2 - 11/54 = 21 27/54 - 11/54 = 21 16/54 = 21 8/27
5) 21 8/27 + 1 23/432 = 21 128/432 + 1 23/432 = 22 151/432
Пояснения:
3 2/3 = (3*3+2)/3 = 11/3
5 5/12 = (5*12+5)/12 = 65/12
1/2 = 27/54 - доп.множ.27
8/27 = 128/432 - доп.множ.16