2/3 : 8/2 × 1/8
= 2/3 × 2/8 × 1/8
= 2×2×1/3×8×8
= 1/48
\(\frac{2}{3}:\frac{8}{2}\cdot\frac{1}{8}\)
\(=\frac{2}{3}\cdot\frac{1}{4}\cdot\frac{1}{8}\)
\(=\frac{2\cdot1\cdot1}{3\cdot4\cdot8}\)
\(=\frac{1\cdot1\cdot1}{3\cdot2\cdot8}\)
\(=\) \(\frac{1}{48}\)
\(\frac{2}{3}\)\(:\)\(\frac{8}{2}\)\(x\)\(\frac{1}{8}\)\(=\)\(\frac{2}{3}\)\(x\)\(\frac{2}{8}\)\(x\)\(\frac{1}{8}\)\(=\)\(\frac{2x2x1}{3x8x8}\)\(=\)\(\frac{1}{48}\)
\(Tích\) \(cho\) \(mk\) \(nha\) ^_-