Question

2 целых 13/156 - 1 целая 1/2

Answer 1

Ответ:

$2 \frac{13}{156 } - \ 1 \frac{1}{2} = \frac{2 \times 156 + 13}{156} - \frac{1 \times 2 + 1}{2} = \frac{325}{156} - \frac{3}{2} = \frac{25}{12} - 6( \frac{3}{2} ) = \frac{25 - 18}{12} = \frac{7}{12}$