a,x x 1/2 = 1/3
b,x : 4/5 = 5/2
2/9 : x = 2/3
Bài toán này :
X x 1/2 = 1/3
X = 1/3 : 1/2
X = 2/3
X : 4/5 = 5/2
X = 5/2 x 4/5
X = 1/2
2/9 : X = 2/3
X = 2 / 9 : 2/ 3
X = 3
a) \(x.\frac{1}{2}=\frac{1}{3}\)
\(x=\frac{1}{3}:\frac{1}{2}\)
\(x=\frac{2}{3}\)
b) \(x:\frac{4}{5}=\frac{5}{2}\)
\(x=\frac{5}{2}.\frac{4}{5}\)
\(x=2\)
c) \(\frac{2}{9}:x=\frac{2}{3}\)
\(x=\frac{2}{9}:\frac{2}{3}\)
\(x=\frac{1}{3}\)