11.oblicz:
a) 1 1/3*9/11=
4 3/14*7=
b)15*3 1/5=
3 2/3*1 1/5=
a) 1 1/3*9/11=
4 3/14*7=
b)15*3 1/5=
3 2/3*1 1/5=
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4 3/14 * 7 = 59/14 * 7/1 = 59/2 * 1 = 29 1/2
15 * 3 1/5 = 15/1 * 16/15 = 16
3 2/3 * 1 1/5 = 11/3 * 6/5 = 11 * 3/5 = 33/5= 6 3/5