Пошаговое объяснение:
45) (17/8-11/20):5/46=5*17/40-2*11/40):5/46 = (85/40-22/40):5/46=
=63/40:5/46=63/40 * 46/5=63*46/40*5=2898/200=1449/100=14.49;
Следующие покороче:
46) 3.9*4.8:14.4=18.72:14.4=1.3;
47) 4.5*3.3:19.8=14.85 : 19.8= 0.75;
48) 2.1*4.2:9.8=8.82:9.8=0.9;
49) 2.8*4.6:16.1=12.88:16.1=0,8.
45. (17/8-11/20):5/46=(170/80-44/80:5/46=126/80*46/5=5796/400=1449/100=14.49
46. 3.9*4.8/14.4=18.72/14.4=1.3
47. 4.5*3.3/19.8=0.75
48. 2.1*4.2/9.8=0.9
49. 2.8*4.6/16.1=0.8
Пошаговое объяснение:
45) (17/8-11/20):5/46=5*17/40-2*11/40):5/46 = (85/40-22/40):5/46=
=63/40:5/46=63/40 * 46/5=63*46/40*5=2898/200=1449/100=14.49;
Следующие покороче:
46) 3.9*4.8:14.4=18.72:14.4=1.3;
47) 4.5*3.3:19.8=14.85 : 19.8= 0.75;
48) 2.1*4.2:9.8=8.82:9.8=0.9;
49) 2.8*4.6:16.1=12.88:16.1=0,8.
45. (17/8-11/20):5/46=(170/80-44/80:5/46=126/80*46/5=5796/400=1449/100=14.49
46. 3.9*4.8/14.4=18.72/14.4=1.3
47. 4.5*3.3/19.8=0.75
48. 2.1*4.2/9.8=0.9
49. 2.8*4.6/16.1=0.8
Пошаговое объяснение: