Odpowiedź:
e) -1/7 x 4/3 = -4/21
f) 1/2 x 3/101 = 3/202
e) 2 x 2/5 x 25/8 = 2 x 5/4 = 5/2 = 2 1/2
f) - 1/2 x 2/7 x 1/3 = - 1/7 x 1/3 = -1/21
e) 25 x ( - 17/15) = - 5 x 17/3 = - 85/3 = - 28 1/3
f) - 3 x 25/9 = -25/3 = -8 1/3
e) - 11/18 x ( - 27/5) = 11/2 x 3/5 + 33/10 = 3 3/10
f) 14/5 x 55/21 = 2 x 11/3 = 22/3 = 7 1/3
e) - 1/4 x ( 8/73) =2/73
f) 6/5 x 1/25 = 6/125
