Ответ:
Пошаговое объяснение:
3) 2 2/7 * 1 1/8= 16/7* 9/8= 2/7*9/1= 18/7= 2 4/7
4) 1 3/5* 7 1/2=8/5*15/2=4/1*3/1= 12
5) 2 1/7* 2 2/5=15/7*12/5= 3/7*12/1= 36/7= 5 1/7
8) 4 1/6 * 2 1/5= 25/6*11/5= 5/6*11/1= 55/6= 9 1/6
10) 1 1/5* 2 11/12=6/5*35/12= 1/1* 7/2= 7/2= 3 1/2
12)7 5/9* 1 1/17= 68/9 * 18/17= 4/1*2/1 = 8
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Ответ:
Пошаговое объяснение:
3) 2 2/7 * 1 1/8= 16/7* 9/8= 2/7*9/1= 18/7= 2 4/7
4) 1 3/5* 7 1/2=8/5*15/2=4/1*3/1= 12
5) 2 1/7* 2 2/5=15/7*12/5= 3/7*12/1= 36/7= 5 1/7
8) 4 1/6 * 2 1/5= 25/6*11/5= 5/6*11/1= 55/6= 9 1/6
10) 1 1/5* 2 11/12=6/5*35/12= 1/1* 7/2= 7/2= 3 1/2
12)7 5/9* 1 1/17= 68/9 * 18/17= 4/1*2/1 = 8