Question

помогите пожалуйста.

Answer 1

1) 1/4*1 1/4 = 5/4*5/4 = 24/16 = 1 8/16 = 1 1/2
2)1 1/2-5/8 = 1 4/8-5/8 = 12/8-5/8 = 7/8
3)7/8*10 2/3 = 7/8*32/3 = 7*32/8*3 = 7*4/1*3 = 28/3 = 9 1/3
4)9 1/3-7 1/3 = 2