Answer:
-15
Step-by-step explanation:
Note the rules when multiplying or dividing numbers with signs.
IF:
1) You are multiplying or dividing with two negative numbers, your answer will be positive.
2) You are multiplying or dividing with one negative and one positive number, your answer will be negative.
3) You are multiplying or dividing with two positive numbers, your answer will be positive.
Note that there is one negative term (-1) and one positive term (15). Multiply. Follow rule 2:
15 x -1 = -15
-15 is your answer.
~
