Question

4целых-35=?     15целых-67=?      3целых15-1целая35=?     2целых49-1целая79=?

Answer 1

$4-frac{3}{5}=frac{20-3}{5}=frac{17}{5}=3frac{2}{5}$

 

$15-frac{6}{7}=frac{105-6}{7}=frac{99}{7}=14frac{1}{7}$

 

$3frac{1}{5}-1frac{3}{5}=frac{16}{5}-frac{8}{5}=frac{16-8}{5}=frac{8}{5}=1frac{3}{5}$

 

$2frac{4}{9}-1frac{7}{9}=frac{22}{9}-frac{16}{9}=frac{22-16}{9}=frac{6}{9}=frac{2}{3}$