2,25*2/3 (3/8+5/6+1/2):2/3 1 1/6:0,7

2,25 * 2/3 = = 2 i 25/100 * 2/3= = 2 i 1/4 * 2/3= = 9/4 * 2/3 = (skracam 9 z 3 oraz 4 z 2) = 3/2 * 1/1= = 3/2= = 1 i 1/2 (3/8 + 5/6 + 1/2) : 2/3= = (9/24 + 20/24 + 12/24) * 3/2= = 41/24 * 3/2=  (skracam 24 z 3) = 41/8 * 1/2= = 41/16 = = 2 i 9/16 1 i 1/6 : 0,7= = 7/6 : 7/10= = 7/6 * 10/7 = (skracam 7 z 7 oraz 6 z 10) = 1/3 * 5/1= = 5/3= = 1 i 2/3

a) 2,25*2/3 = 225/100 *2/3 = 450/300 = 45/30 = 1 i 15/30 = 1 i 1/2 = 1,5b) (3/8+5/6+1/2):2/3 = (9/24+20/24+12/24):2/3 = 41/24:2/3 = 41/24*3/2 = 123/48 = 2 i 27/48 = 2 i 9/16 c) 1 1/6:0,7 = 7/6 :7/10 = 7/6*10/7 = 70/42 = 10/6 = 1 i 4/6 = 1 i 2/3