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- 68/10 : 25/3 : (-17/10) : (-9/5) : 8/10 : 3/1 =
- 68/10 * 3/25 * (-10/17) * (-5/9) * 10/8 * 1/3 =
- 17/1 * 1/5 * (-1/17) * (-1/3) * 10/2 =
-1/1 * 1/1 * (-1/1) * (-1/3) * 2/2 = - 2/6 = - 1/3
b) - 4,2 : (-2 1/3) : (0,036) : (-25) : (- 1/3) =
- 42/10 : (- 7/3) : 36/1000 : (-25/1) : (- 1/3) =
- 42/10 * (- 3/7) * 1000/36 * (- 1/25) * (- 3/1) =
- 6/10 * (- 3/1) * 40/12 * (-1/1) *(-1/1) =
- 1/10 * (- 3) * 4/2 * (-1) * (-1) =
- 1/1 * (-3) * 2 * (-1) * (- 1) = 6
c) 33,3 : (- 1,11) * 30 : (-4 1/2) : 2 6/7 * (-0,1) =
33/10 : (- 111/100) * 30 : (-9/2) : 20/7 * (-1/10) =
33/10 * (- 100/111) * 30 * (- 2/9) * 7/20 * (-1/10) =
11/10 * (-10/111) * 3 * (-2/3) * 7/2 * (-1/10) =
11/1 * (-1/111) * 1 * (- 2/1) * 7/2 * (-1/1) = - 154/222
d) -(0,006) : (-0,04) : 1 1/5 * (-3/2) * 2 3/4 : (-2,2) =
-(6/1000) : (- 4/100) : 6/5 * (-3/2) * 11/4 : (- 22/10) =
-(6/1000) * (-100/4) * 5/6 * (-3/2) * 11/4 * (-10/22) =
- (1/10) * (- 1/4) * 5/1 * (- 3/2) * 1/2 * (-5/2) =
- (1/2) * (-1/4) * 1/1 * (-3/2) * 1/2 * (-5/2) = 15/64