Problem
Four times the product of negative three and a number.
Solution
Step 1 ：\( 4 \times (-3 \times n) \)
Step 2 ：\( 4 \times (-3n) \)
Step 3 ：\( -12n \)
Step 1 ：\( 4 \times (-3 \times n) \)
Step 2 ：\( 4 \times (-3n) \)
Step 3 ：\( -12n \)
