Question

`9 *(2 * 1)`
​

Answer 1

18

Explanation:

You do the parenthesis first (2 x 1) and get 2. Then multiply 9 x 2 to get 18.

Answer 2

9 x (2 x 1)

Parenthesis first

2 x 1 = 2

So,

9 x 2

18