1 <span>7/9</span>*2 <span>2/5</span>= <span>1*9 + 7/9 *</span><span>2*5 + 2/5 </span>=<span>16/9*</span><span>12/5</span>=<span>16 *12/9 *5</span>= <span>192/45</span>=<span>64*3/15*3= </span>=<span>64/15</span>=4 <span>4/15
4 4/15 : 1 3/5 = 64/15:8/5= 64/15*5/8= 64 *5/15 *8=320/120 =8*40/3*40=8/3 =2 2/3</span><span>
</span>
8 · 4 = 32 (л) 8 ·6 = 48 (л) 8 ·7 = 56 (л) 8 ·9 = 72 (л)
1) 100-84=16%
2) 64/16=4
3). 4*100=400
Я не уверена
Ответ:. 1
1)16, 2)9 _
3
Пошаговое объяснение:
1. 11. 1. 2
1.9_:. _ - 3 _ • 1 _ = 16
6. 24. 9. 7
1) 1. 11. 55. 24
9 _ : _ = _. • _. =20
6. 24. 6. 11
2). 1. 2 28. 9
3 _ • 1. _ = _. •. _ = 4
9. 7. 9. 7
3)20-4=16
2.1) 1. 17. 15. 28. 1
2_: 1. _. =. _ •. _. =1. _
7. 28. 7. 45. 3
2)37. 81
_. •. _. = 9
9. 37
3). 1. 1
9+_ =9_
3. 3