Bài 1 : \(a,\frac{1}{2}-x=\frac{1}{4}\)
\(x=\frac{1}{2}-\frac{1}{4}\)
\(x=\frac{1}{4}\)
\(\Rightarrow B\)đúng
\(b,B\)đúng
Bài 2 : \(a,\frac{4}{7}\times\frac{5}{8}=\frac{5}{14}\)
\(b,23-7:\frac{1}{3}\)
\(=23-7\times3\)
\(=23-21\)
\(=2\)
a, x = \(\frac{1}{4}\)
b, Phân số \(\frac{8}{7}\)
2, A, \(\frac{4}{7}\)x \(\frac{5}{8}\) = \(\frac{5}{14}\)
23 - 7 : \(\frac{1}{3}\) = 2
1.
a, \(\frac{1}{2}\)- x = \(\frac{1}{4}\)Vậy kết quả là b, phân số lớn hơn 1 là
B.\(\frac{1}{4}\) B. \(\frac{8}{7}\)
2. Tính
A, \(\frac{4}{7}\)x\(\frac{5}{8}\)=\(\frac{4.5}{7.8}\)=\(\frac{20}{56}\)=\(\frac{5}{14}\) B, 23-7:\(\frac{1}{3}\) = 23-7.\(\frac{3}{1}\)=23-\(\frac{21}{1}\)=23-21= 2