Question

15+1318+4/5+518=
4163-3163+1/7=
это дроби

Answer 1

$frac{1}{5} + frac{13}{18}+ frac{4}{5} + frac{5}{18} = frac{1+4}{5}+ frac{13+15}{18} = frac{5/5}{y}+ frac{18}{18}=1+1=2$

$frac{41}{63}- frac{31}{63} + frac{1}{7}= frac{41-31}{63} + frac{1*9}{7*9} = frac{10}{63}+ frac{9}{63} = frac{10+9}{63} = frac{19}{63}$