Question

2 целых 1/7*3целых1/9=; 3/7*7/9=; 5/8*1целую13/15*2целых2/7=; числа-дроби

Answer 1

$2frac{1}{7} *3 frac{1}{9} = frac{15}{7} * frac{28}{9} = frac{331}{63} =5 frac{16}{63}$