Question

2 + 3[4 + (7 – 3) – 23]

Answer 1

It would be 75
PEMDAS
Parentheses
Exponents
Multiply = Divide
Add = Subtract

Answer 2

You do what's in the parenthesis first:

7 - 3 = 4

Next the brackets:

4 + 4 - 23 = -15

Now whats outside the brackets:

2 + 3 * -15

2 + 3 = 5

5 * -15 = -75

Explanation:

Hope it helps! =D