Answer:
B. 6(7+15)
Step-by-step explanation:
This problem is asking you to find which expression is equal to 42+90,
To do this, using 6(7+15), you multiply 6 by both the 7 and 15. So 6(7) + 6(15). Now you get 42+90. You can check each expression by doing this method to see if they equal 42+90.
