Question

Where does my sister put brackets at?

Answer 1

$3 \times (4 - 1) + 2 = 3 \times 3+2=11$

Answer 2

Put the brackets around 4-1

Using the rules of PEMDAS, the brackets would go first (4-1 is 3), then you would do the multiplication (3×3 is 9), and then finally the addition (9+2 is 11).