a)\(=>x=\dfrac{5}{9}:\dfrac{4}{7}=\dfrac{35}{36}\)
b)\(=>x=\dfrac{11}{15}:\dfrac{2}{3}=\dfrac{11}{10}\)
a) \(\dfrac{4}{7}\times x=\dfrac{5}{9}\)
\(x=\dfrac{5}{9}\div\dfrac{4}{7}\)
\(x=\dfrac{5}{9}\times\dfrac{7}{4}\)
\(x=\dfrac{35}{35}\)
b) \(\dfrac{11}{15}\div x=\dfrac{2}{3}\)
\(x=\dfrac{11}{15}\div\dfrac{2}{3}\)
\(x=\dfrac{11}{15}\times\dfrac{3}{2}\)
\(x=\dfrac{33}{30}\)
\(x=\dfrac{11}{10}\)