Question

помогите пожалуйста！！！！！！！

Answer 1

2 1/3 *2 1/3=73*7/3=49/9
5 4/9 - 49/9 = 5 4/9 - 5 4/9 = 0
0* 8 1/4 * 1 3/20 = 0
12 * 1/3 = 4
4 * 3 3/4 = 4 * 15/4 = 15
15 * 1 1/5 = 15 * 6/5 = 18
4/17 * 0 * 5 18/49 = 0
0+18-0 = 18