Câu 4: Trang 138 sách giáo khoa (SGK) toán tiếng Anh lớp...

{
"content1": "a) To calculate \(\frac{8}{5}:\frac{1}{3}\), we need to multiply the first fraction by the reciprocal of the second fraction. So, \(\frac{8}{5}:\frac{1}{3} = \frac{8}{5} \times \frac{3}{1} = \frac{24}{5} = 4.8\). Therefore, the result is 4.8.",
"content2": "b) For \(\frac{3}{7}:2\), we can rewrite it as \(\frac{3}{7}\div\frac{2}{1}\). By multiplying the first fraction by the reciprocal of the second fraction, we get \(\frac{3}{7} \times \frac{1}{2} = \frac{3}{14} \approx 0.2143\). So, the result is approximately 0.2143.",
"content3": "c) To solve \(2:\frac{2}{4}\), we convert the division into multiplication by taking the reciprocal of the fraction. Thus, \(2:\frac{2}{4} = 2 \times \frac{4}{2} = 2 \times 2 = 4\). Therefore, the answer is 4.",
"content4": "d) (Add additional calculation information here for option d)",
"content5": "e) (Add additional calculation information here for option e)"
}