Сокротите дроби: 10*9/30*9, 12*14*16/14*16*18, 14*15/21*20, 5*9/6*7*30.

Question

Сокротите дроби: 10*9/30*9, 12*14*16/14*16*18, 14*15/21*20, 5*9/6*7*30.

Answer 1

10*9/30*9=1/3*9=3
12*14*16/14*16*18=12/18=2/3
14*15/21*20=2*3/3*4=6/12=1/2 или 0,5
5*9/6*7*30=5*9/42*30=9/42*6=9/252=1/28