1/3*4/5*3/4= 1/2*5*7*2/5=

1/3*4/5*3/4= 0,2 lub 1/5 1/2*5*7*2/5= 7  

1/3 * 4/5 * 3/4= 4/15 * 3/4=3/15= 1/5 1/2 * 5 * 7 *2/5= 2,5 * 7 * 2/5= 17,5 * 2/5= 17,5 * 0,4=7

1/3 * 4/5 * 3/4 = = 1/3 * 3/5 = = 1/5 1/2 * 5 * 7 * 2/5 = = 2,5 * 7 * 0,4 = = 17,5 * 0,4 = = 7