= 1 - (6/15 + 5/15)
= 1 - 11/15
= 4/15
\(1-\left(\dfrac{2}{5}+\dfrac{1}{3}\right)=1-\left(\dfrac{6}{15}+\dfrac{5}{15}\right)=1-\dfrac{11}{15}=\dfrac{15}{15}-\dfrac{11}{15}=\dfrac{4}{15}\)
\(=1-\left(\dfrac{6}{15}+\dfrac{5}{15}\right)=1-\dfrac{11}{15}=\dfrac{4}{15}\)
\(1-\left(\dfrac{2}{5}+\dfrac{1}{3}\right)=1-\dfrac{11}{15}=\dfrac{4}{15}\)