theo đề, khi chia cho a đc 32 dư 15, ta có: a = 32k + 15 (k là số nguyên)
để phép chia không dư thì làm cho a bằng 0. số dư của ta là 15 nên 32 - 15  = 17 để phép chia hết
sau khi tăng xong ta có:
a' = a + 17 = 32k + 15 + 17 = 32(k+1)
vậy số a cần tăng thêm tổng cộng là:
17 + 2 = 19 đơn vị
vậy a cần tăng thêm 19 đơn vị để phép chia không dư

gọi số tiền mẹ mang đi là x (đồng)

số tiền của mẹ còn lại sau khi mua thịt

\(x-\dfrac{3}{5}x=\dfrac{2}{5}x\) (đồng)

số tiền còn lại sau khi mua thịt, vậy số tiền mua đậu là:

\(\dfrac{1}{2}\cdot\dfrac{2}{5}x=\dfrac{1}{5}x\) (đồng)

số tiền còn lại sau khi mua đậu là:

\(\dfrac{2}{5}x-\dfrac{1}{5}x=\dfrac{1}{5}x\)

theo đề ta có:

\(\dfrac{1}{5}x=5000+5000=10000\\ x=10000:\dfrac{1}{5}=50000\)

vậy số tiền lúc đầu mẹ mang đi là 50000 đồng

1 The blue dress is shorter than the red one
2 Watching television is more boring than reading books
3 Orange juice is better than coffee
4 Cars are faster than motorbikes
6 Mai is the most careful girl of the three sisters
7 Hoi An is more peaceful than Ha Noi
9 His house is newer than my house
10 This street is narrower than Tran Phu street
11 This film is more fantastic than that film
12 Ann is slimmer than Laura
13 This house is more modern than that house
14 The square in Ha Noi is bigger than the square in Hoi An
15 A house in the city is more expensive than a house in the countryside
16 My bag is heavier than yours
17 Living in a house is more convenient than living in a flat
19 Things in this shop are more expensive than things in the supermarket
20 Is a sofa more comfortable than a chair
21 Are your streets narrower than ours

I am down with a cold and fever, so I can’t go to school

1 You are not allowed to drive if you don’t have a driving license
2 In spite of the heavy rain, he went out without a raincoat
3 We have been married for 10 years

Yesterday, I went to (1) the park with my friends. We had a picnic under (2) a big tree and played frisbee. In the afternoon, we went for (3) a walk around the lake. We saw (4) an interesting bird that we had never seen before. It had (5) a bright red beak and (6) a long tail. We also saw the ducks swimming in the lake. After our walk, we had (7) an ice cream cone and then went (8) chỗ này không cần điền home

\(3\cdot\left(2\cdot1\right)=6x-3x\\ 6=3x\\ x=\dfrac{6}{3}=2\)

1 A. Not to go
2 B. Than
3 A. Prefer
4 B. Picked

1 Mrs. Lien suggested organizing an English competition for their students
2 Bob denied taking Susie's calculator
3 David accused Henry of taking his pencil