Question

12.ц.7/15-9Ц.3/4+5.ц.11/12

Answer 1

12 7/15-9 3/4+5 11/12=12 28/60-9 45/60+5 55/60=(12 28/60+5 55/60)-9 45/60=

=17 83/60-9 45/60=8 38/60=8 19/30

Answer 2

Кажется так
5-(94858*5.441)r
5-516122.378r