Viết phân số 

- Hướng dẫn giải

$\frac{7}{16}=\frac{1+6}{16}=\frac{1}{16}+\frac{6}{16}=\frac{1}{16}+\frac{3}{8}$

$\frac{7}{16}=\frac{2+5}{16}=\frac{2}{16}+\frac{5}{16}=\frac{1}{8}+\frac{5}{16}$

$\frac{7}{16}=\frac{3+4}{16}=\frac{3}{16}+\frac{4}{16}=\frac{3}{16}+\frac{1}{4}$

$\frac{7}{16}=\frac{8+(-1)}{16}=\frac{8}{16}+\frac{-1}{16}=\frac{1}{2}+\frac{-1}{16}$