[a:b] = 6; [a;b] = 180.tìm a;b
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tìm a:b. khi biết a:b *4+1:6=17:6
a/b x 4 + 1/6 = 17/6
a/b x 4 = 17/6 + 1/6
a/b x 4 = 3
a/b = 3 : 4
a/b = 3/4
Vậy a:b bằng 3/4 hoặc nếu như số thập phan thì là 0,75
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Cho 4 só a;b;c thoả mãn a:b=2:3 ; b:c= 4:5 ; c:d = 6:7
Khi đó a:b;c=
Tìm phân số a:b sao cho khi thêm a:b vào mỗi phân số 5:6 và 1:9 thì ta được hai phân số mới có tỉ số là 4
tìm a và b biết (a+b):2=21 và a:b=6
\(=>a+b=21\times2=42\)
\(a:b=6=>a=6b\)
\(=>6b+b=42\)
\(b\left(6+1\right)=42\)
\(b=42:7=6\)
\(a=42-6=36\)
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Ta có : `(a+b) : 2= 21 => a+b = 21 . 2 = 42 `
Và ` a:b=6 => a =6b <=> b = 1/6 a`
`a` là :
` 42 : ( 6+1) . 6= 36 `
` b` là :
` 42 - 36 = 6 `
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a:b=6 dư 3,a+b+3=195. Tìm a;b
Tổng a + b là:
195 - 3 = 192
Tổng mới là:
192 - 3 = 189
Tổng số phần bằng nhau là:
6 + 1 = 7 phần
Số b là:
189 : 7 = 27
Số a là:
192 - 27 = 165
Đáp số : 27 và 165
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Tổng a + b là:
195 - 3 = 192
Tổng mới là:
192 - 3 = 189
Tổng số phần bằng nhau là:
6 + 1 = 7 phần
Số b là:
189 : 7 = 27
Số a là:
192 - 27 = 165
Đáp số : 27 và 165
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a:b=-2.4:3.8 va 2a+b=-6 .Gía trị a+b
a:b=2;3
b:c=4:5
c:d=6:7
hỏi a:b:c:d=...;...:...:...
Cho A=4^15.9^9-8.3^18.8^9;B=5.2^9.6^19+7.2^29.27^6.Tính A:B
\(A=4^{15}.9^9-8.3^{18}.8^9=2^{2.15}.3^{2.9}-2^3.3^{18}.2^{3.9}=2^{30}.3^{18}-2^{30}.3^{18}=0\)
=> A:B=0
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I. Write questions for the underlined parts.1. A:B: My hobby is photography.2. A:B: I started my hobby five years ago.3. A:B: I enjoy my hobby because I think it’s creative.4. A:B: I spend two hours a day on my hobby.5. A:B: Jim usually plays volleyball in his free time.6. A:B: He plays volleyball three times a week.7. A:B: He often plays volleyball at the court near his school.8. A:B: He likes to play volleyball with his friends. Giup m...
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I. Write questions for the underlined parts.
1. A:
B: My hobby is photography.
2. A:
B: I started my hobby five years ago.
3. A:
B: I enjoy my hobby because I think it’s creative.
4. A:
B: I spend two hours a day on my hobby.
5. A:
B: Jim usually plays volleyball in his free time.
6. A:
B: He plays volleyball three times a week.
7. A:
B: He often plays volleyball at the court near his school.
8. A:
B: He likes to play volleyball with his friends. Giup mik vs nha:>
1 What is your hobby?
2 When did you start your hobby
3 Why do you enjoy your hobby
4 How many hours a day do you spend on your hobby
5 What does Jim usually do in his free time
6 How often does he play volleyball
7 Where does he often play volleyball
8 Who does he like to play volleyball with
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I. Write questions for the underlined parts.
1. A: What is your hobby
B: My hobby is photography.
2. A:When did you started yor hobby
B: I started my hobby five years ago.
3. A:why do you enjoy your hobby
B: I enjoy my hobby because I think it’s creative.
4. A:How many hours a day fo you spend on your hobby
B: I spend two hours a day on my hobby.
5. A:What does Jim ussually do in his free time
B: Jim usually plays volleyball in his free time.
6. A:How often does he play volleyball
B: He plays volleyball three times a week.
7. A:Where does he often play volleyball
B: He often plays volleyball at the court near his school.
8. A:Who does he like to play with
B: He likes to play volleyball with his friends.
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