Question

[Hoàng Ngân Hà]

Cíu mk với!!! Híp mi

Answer 1

[Knight™]

\(a,\dfrac{5}{4}+\dfrac{3}{8}=\dfrac{10}{8}+\dfrac{3}{8}=\dfrac{13}{8}\)

\(b,\dfrac{2}{3}-\dfrac{3}{8}=\dfrac{16}{24}-\dfrac{9}{24}=\dfrac{7}{24}\)

\(c,\dfrac{5}{7}\times4=\dfrac{20}{7}\)

\(d,\dfrac{9}{11}:\dfrac{2}{7}=\dfrac{9}{11}\times\dfrac{7}{2}=\dfrac{63}{22}\)

Answer 2

[TV Cuber]

\(a,\dfrac{13}{8}b,\dfrac{7}{24}c,\dfrac{20}{7}d,\dfrac{63}{22}\)