Question

[9+{28÷(15÷3+2)-12}-1​

Answer 1

Step-by-step explanation:

Hope it helps...........

Answer 2

Answer:

9+{28/(15/3+2)-12}-1

=9+{28/(5+2)-12}-1

=9+{28/7-12}-1

=9+{4-12}-1

=9-8-1

=9-9

=0