Simplify the following expression.

99 - 3[15 - (2 + 1) ]

Steps

99-3 (15 - (2+1))

3 (15 - (2+1)) = 36

add the numbers: 2+1=3

=3 (15-3)

Subtract the numbers: 15-3=12

=3 times 12

multiply the numbers: 3 times 12=36

=36

=99-36

subtract the numbers: 99-36=63

=63

63

Step-by-step explanation:

2+1 = 3

15-3 = 12

12 x 3 = 36

99 - 36

= 63