Question

1 5/7-4 3/13:1 19/26

Answer 1

$\frac{12}{7} - \frac{55}{13} \div \frac{45}{26} = \frac{12}{7} - \frac{55}{13} \times \frac{26}{45} = \frac{12}{7} - 11 \times \frac{2}{9} = \frac{12}{7} - \frac{22}{9} = - \frac{46}{63}$