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b) -3 1/7 : 11= -22/7 * 1/11= -2/7
c) 2 1/4 : (-1 1/2 )=9/4 : -3/2 = 9/4 * (-2/3) = -1,5
d) -1,21 + 5,1=3,89
e) -3,24 * ( -0,2 )= (minusy się skracają) =0.648
f) 0,24 : (-0,4 )=-0.6
g) 2 3/4 * (-0,5)=11/4 * -1/2 = -11/8
h) -2,3 - 1/3=-2 3/10 - 1/3 = -23/10 - 1/3 = -69/30 - 10/30 = -79/30= -2 19/30
i) -3,75 : ( -1 1/4 )=-15/4 : - 5/4 = -15/4 * - 4/5 = 3
j) 1/3 : (-0,7)=1/3 : -7/10 = 1/3 * -10/7 = - 10/21
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