Question

zad 5

a/ 0,2* 5/6* 3=

b/ 4 i 3/8 * 3* 1 i 1/7=

c/ 4,2 * 2 i 6/7 * 2 i 8/9=

d/ 5/6:1,5: 10/9=

e/ 1 i 13/15 : 1 i 1/5 :14=

f/ 4 i 5/6 + 2,5 - 3 i 2/3 + 5 i 1/12=

prosze z obliczeniami daje najlepsza ;d

Answer 1

a) 0,2* 5/6* 3 = 1/5 * 5/6 * 3 = 15/30 = 1/2

b) 4 i 3/8 * 3* 1 i 1/7 = 35/8 * 3 * 8/7 = 840/56 = 15

c) 4,2 * 2 i 6/7 * 2 i 8/9 = 42/10 * 20/7 * 26/9 = 21840/630 = 34 i 2/3

d) 5/6:1,5: 10/9 = 5/6 * 2/3 * 9/10 = 10/18 * 9/10 = 90 / 180 = 1/2

e) 1 i 13/15 : 1 i 1/5 :14 = 28/15 : 6/5 : 14 = 28/15 * 5/6 * 1/14 = 140/90 * 1/14 = 140/1260 = 7/63

f) 4 i 5/6 + 2,5 - 3 i 2/3 + 5 i 1/12 = 29/6 + 5/2 - 11/3 + 61/12 = 58/12 + 30/12 - 44/12 + 61/12 = 105/12 = 8 i 3/4