Answer:
Call the numbers a, b, c, d. What does it say if their mean is 15? That would be that added together then divided by 4 you get 15. So the number before you divided by 4, which is the sum, was 60. If you know some algebra, the equation (a+b+c+d)/4=15 gives the sum of 60 when you multiply both sides
If you ever times a number by 0 then the answer will be 0 no matter what
Answer:
Step-by-step explanation:
Can you post a picture instead? this is really confusing.. thank youu!