Question

срочно помогите срочно срочно срочно срочно ​

Answer 1

$\displaystyle \frac{40}{12}=\frac{10*4}{3*4}=\frac{10}{3}=3\frac{1}{3}\\\\\\\frac{20}{56}=\frac{5*4}{14*4}=\frac{5}{14}\\\\\\\frac{21}{48}=\frac{7*3}{16*3}=\frac{7}{16}$