Question

Answer 1

a: \(\dfrac{1}{24}-\dfrac{1}{16}=\dfrac{16-24}{24\cdot16}=\dfrac{-8}{24\cdot16}=\dfrac{-1}{3\cdot16}=\dfrac{-1}{48}\)

b: \(\dfrac{-1}{8}-\dfrac{3}{20}=\dfrac{-20-24}{160}=\dfrac{-44}{160}=\dfrac{-11}{40}\)

Answer 2

\(\dfrac{-1}{16}+\dfrac{-1}{24}=\dfrac{-3+\left(-2\right)}{48}=\dfrac{-5}{48}\)

\(\dfrac{-1}{8}-\dfrac{3}{20}=\dfrac{-10-12}{80}=\dfrac{-22}{80}=\dfrac{-11}{40}\)

\(\dfrac{-18}{10}+0,4=-1,8+0,4=-1,4\)

Answer 3

\(6,5-\left(-\dfrac{1}{5}\right)=6,5+0,2=6,7\)