Question

Answer 1

\(a,\dfrac{5}{10}-\dfrac{2}{15}\) 

 MSC : 30 

 \(a,\dfrac{5}{10}-\dfrac{2}{15}\) = \(\dfrac{15}{30}-\dfrac{4}{30}=\dfrac{11}{30}\) 

 \(b,\dfrac{5}{20}-\dfrac{1}{6}\)

 MSC : 60 

 \(b,\dfrac{5}{20}-\dfrac{1}{6}\) = \(\dfrac{15}{60}-\dfrac{10}{60}\) = \(\dfrac{5}{60}\) = \(\dfrac{1}{12}\) 

\(c,\dfrac{6}{18}-\dfrac{6}{24}\) 

 MSC : 72 

 \(c,\dfrac{6}{18}-\dfrac{6}{24}\) = \(\dfrac{24}{72}-\dfrac{18}{72}=\dfrac{6}{72}\) = \(\dfrac{1}{12}\) 

\(d,\dfrac{5}{9}-\dfrac{3}{12}\) 

 MSC : 36 

 ​​​\(\dfrac{5}{9}-\dfrac{3}{12}=\dfrac{20}{36}-\dfrac{9}{36}=\dfrac{11}{36}\) ​