Question

(1/2*3/4)*(2/3*4/5)*(5/6*7/8)*(6/7*8/9)

Answer 1

1) 1/2 * 3/4 = 3/8 
2) 2/3 * 4/5 = 8/15
3) 5/6 * 7/8 = 35/48
4) 6/7 * 8/9 = 16/21
5) 3/8 * 8/15 = 1/5
6) 1/5 * 35/48 = 7/48
7) 7/48 * 16/21 = 1/9

Answer 2

(1*3*2*4*5*7*9*8)/(2*4*3*5*6*8*7*9)=1/9
записать под одной дробной чертой и сократиь