Question

[ღTruzgღ★ - FϏ]

giúp mk với cần rất gấp!!!

Answer 1

[Mai Anh Nguyen]

\(4\times\frac{6}{7}=\frac{4\times6}{7}=\frac{24}{7}\)

\(\frac{8}{21}\div\frac{4}{7}=\frac{8}{21}\times\frac{7}{4}=\frac{2}{3}\)

\(\frac{5}{8}\div5=\frac{5}{8}\times\frac{1}{5}=\frac{1}{8}\)

Answer 2

[Lê Hoàng Minh +™( ✎﹏TΣΔM ΔΠGΣLS ΩҒ...]

4x\(\frac{6}{7}\)=\(\frac{4x6}{7}\)=\(\frac{24}{7}\)

\(\frac{8}{21}\) :\(\frac{4}{7}\)=\(\frac{8}{21}\)x\(\frac{7}{4}\) = \(\frac{8x7}{21x4}\)=\(\frac{2x1}{3x1}\)=\(\frac{2}{3}\)

\(\frac{5}{8}\):5=\(\frac{5}{8}\)x\(\frac{1}{5}\)=\(\frac{5x1}{8x5}\)=\(\frac{1x1}{8x1}\)=\(\frac{1}{8}\)