1) 23
2) 5 1/2 или 5,5
3) 1 1/2 или 1,5
Пошаговое объяснение:
1) (3 1/5 - 1 2/3) * 15 = (16/5 - 5/3) * 15 = (48/15 - 25/15) * 15 = 23/15 * 15 = 23
2) (2 3/7 + 1 1/2) : 5/7 = (17/7 + 3/2) : 5/7 = (34/14 + 21/14) : 5/7 = 55/14 : 5/7 = 55/14 * 7/5 = 11/2 = 5 1/2 = 5,5
3) (5 2/5 + 9 1/6) : 9 32/45 = (27/5 + 55/6) : 9 32/45 = (162/30 + 275/30) : 9 32/45 = 437/30 : 9 32/45 = 437/30 : 437/45 = 437/30 * 45/437 = 3/2 = 1 1/2 = 1,5
1) 23
2) 5 1/2 или 5,5
3) 1 1/2 или 1,5
Пошаговое объяснение:
1) (3 1/5 - 1 2/3) * 15 = (16/5 - 5/3) * 15 = (48/15 - 25/15) * 15 = 23/15 * 15 = 23
2) (2 3/7 + 1 1/2) : 5/7 = (17/7 + 3/2) : 5/7 = (34/14 + 21/14) : 5/7 = 55/14 : 5/7 = 55/14 * 7/5 = 11/2 = 5 1/2 = 5,5
3) (5 2/5 + 9 1/6) : 9 32/45 = (27/5 + 55/6) : 9 32/45 = (162/30 + 275/30) : 9 32/45 = 437/30 : 9 32/45 = 437/30 : 437/45 = 437/30 * 45/437 = 3/2 = 1 1/2 = 1,5