Question

Oblicz
a) -2 1/3 * (-27/28)
b) 3 1/2 - 3 1/6 : (-2 1/9)
c)-1 1/7 * 1 11/24 : 3/5

Answer 1

A) -2 1/3 * (-27/28) = -7/3 * (-27/28) = -1/1 * (-9/4) = 9/4 = 2 1/4 

b) 3 1/2 - 3 1/6 : (-2 1/9) = 3 1/2 - 19/6 : (-19/9)= 3 1/2 - 19/6 * (-9/19) =
     = 3 1/2 - 1/2 * (-3/1) = 3 1/2 + 3/2 = 3 1/2 + 1 1/2 = 4 2/2 = 5

c) - 1 1/7 * 1 11/24 : 3/5 = -8/7 * 35/24 : 3/5 = -1/1 * 5/3 : 3/5 =
     = -5/3 *5/3 = -25/9 = -2 7/9