Пошаговое объяснение:
1.
1) 3 1/3 - 1 2/3 = 10/3 - 5/3 = 5/3
2) 5/3 * 15 = 75/3 = 25
2.
1) 5 2/5 + 9 1/6 = 5 12/30 + 9 5/30 = 14 17/30
2) 14 17/30 : 9 32/45 =
437/30 * 45/437 = 45/30 = 1 15/30 = 1 1/2
1) 25,
2) 1 1/2.
1) (3 1/3 - 1 2/3) × 15 = 1 2/3 × 15 = 25
2) (5 2/5 + 9 1/6) : 9 32/45 = 14 17/30 : 9 32/45 = 437/30 : 437/45 =
= 437/30 × 45/437 = 19665/13110 = 3/2 = 1 1/2
Пошаговое объяснение:
1.
1) 3 1/3 - 1 2/3 = 10/3 - 5/3 = 5/3
2) 5/3 * 15 = 75/3 = 25
2.
1) 5 2/5 + 9 1/6 = 5 12/30 + 9 5/30 = 14 17/30
2) 14 17/30 : 9 32/45 =
437/30 * 45/437 = 45/30 = 1 15/30 = 1 1/2
1) 25,
2) 1 1/2.
Пошаговое объяснение:
1) (3 1/3 - 1 2/3) × 15 = 1 2/3 × 15 = 25
2) (5 2/5 + 9 1/6) : 9 32/45 = 14 17/30 : 9 32/45 = 437/30 : 437/45 =
= 437/30 × 45/437 = 19665/13110 = 3/2 = 1 1/2