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b) 1 i 2/3 * ( - 6/25) = 5/3*(-6/25) = -30/75 = -2/5
c) (-2 i 2/5) * (-3 i 3/4 ) = (-2,4)*(-3,75) = 9
d) (-9,45)* 0,28 = -2,646
e) 0,04 * (-0,27) = -0,0108
f) (-3,6) * 4/9 = (-18/5)*4/9 = -72/45 = -1,6
g) (-2,1) * ( -4 i 2/7) = (-21/10)*(-30/7) = 630/70 = 9
h) -7/8 : (-5,6) = (-7/8):(-28/5) = (-7/8)*(-5/28) = 35/224 = 5/32
i) 9/10 : (- 3/4) = 9/10*(-4/3) = -36/30 = -1⅕
j) (-1 i 1/2): ( -0,06) = (-1,2):(-0,06) = 20
k) (-2i 2/3) : 1,2 = (-8/3):6/5 = (-8/3)*5/6 = -40/30 = -1⅓
l) 2/3 : (- 0,6) = 2/3:(-3/5) = 2/3*(-5/3) = -10/9 = -1¹/₉
m) (-0,45):1 i 4/5 = (-0,45):1,8 = -0,25
n) (-2,75): (-2,2) = 1,25
o) (-3,5) : ( 1 i 2/5) = (-3,5):1,4 = -2,5