Odpowiedź:
0,2 * (-3 i 1/4 +1/4) = 1/5 * (-3) = -3/5
2,25 * 3 i 1/5 - 1,3 = 2 i 1/4 * 3 i 1/5 - 1 i 3/10 = 9/4 * 16/5 - 1 i 3/10 =
= 36/5 - 1 i 3/10 = 7 i 1/5 - 1 i 3/10 = 7 i 2/10 - 1 i 3/10 = 6 i 12/10 - 1 i 3/10 =
= 5 i 9/10
1/2 + 1 i 1/2 : 6 = 1/2 + 3/2 * 1/6 = 1/2 + 1/4 = 2/4 + 1/4 = 3/4
2,6 : 0,1 - 0,1 : 1/60 = 26 - 1/10 * 60 = 26 -6 = 20
1 i 1/3 - 2 : (1 - 2/3) = 1 i 1/3 - 2 : (3/3 - 2/3) = 1 i 1/3 - 2 : 1/3 =
= 1 i 1/3 - 2 * 3 = 1 i 1/3 - 6 = 1 i 1/3 - 5 i 3/3 = - 4 i 2/3
1/5 - 1/6 : (2-1,8) = 1/5 - 1/6 : 0,2 = 1/5 - 1/6 : 1/5 = 1/5 - 1/6 * 5 =
= 1/5 - 5/6 = 6/30 - 25/30 = -19/30
0,3 - 1,2 : (9/4 · (0,2 - 3/4)) = 0,3 - 1,2 : (9/4 * (1/5 - 3/4)) =
= 0,3 - 1 i 2/10 : (9/4 * (4/20 - 15/20)) = 0,3 - 1 i 1/5 : (9/4 * (-11/20)) =
= 0,3 - 6/5 : (-99/80) = 0,3 - 6/5 * (-80/99) = 3/10 +32/33 =
= 99/330 +320/330 = 419/330 = 1 i 89/330
