Question

Oblicz.!:
a) 1 3/5 * 3 3/4 - 2 2/3 =
B) (4 2/9 + 1 2/3) *1 11/12 =
C) 3 1/5 + 1 2/5- 1 2/3 =
D) ( 4 1/6 - 2 2/3 + 2 2/5) : 3 1/4=

Answer 1

1 i 3/5 * 3 i 3/4 - 2 i 2/3 = 8/5 * 15/3 - 2 i 2/3 = 24/3 - 2 i 2/3 = 8 - 2 i 2/3 = 7 i 3/3 - 2 i 2/3 = 5 i 1/3

(4 i 2/9 + 1 i 2/3 ) * 1 i 11/12 = (4 i 2/9 + 1 i 6/9) * 1 i 11/12 = 5 i 8/9 * 1 i 11/12 = 53/9 * 23/12 = 1219/108 = 11 i 31/108

3 i 1/5 + 1 i 2/5 - 1 i 2/3 = 4 i 3/5 - 1 i 2/3 = 4 i 9/15 - 1 i 10/15 = 3 i 24/15 - 1 i 10/15 = 2 i 14/15

(4 i 1/6 - 2 i 2/3 + 2 i 2/5 ) : 3 i 1/4 = (4 i 5/30 - 2 i 20/30 + 2 i 12/30) : 3 i 1/4 = (3 i 35/30 - 2 i 20/30 + 2 i 12/30 ) : 3 i 1/4 = 1 i 15/30 + 2 i 12/30 : 3 i 1/4 = 3 i 27/30 : 3 i 1/4 = 117/30 * 4/13 = 36/30 = 1 i 6/30 = 1 i 1/5