<span>A) Goats that weigh exactly 50 or 60 pounds fall into two classes. would be the right answer</span>
One of the numbers are negative
Remember this... a negative divided by a positive will result in a negative and a negative divided by a negative will result in a positive, the same goes for multiplication
I guess you want to find the 4 numbers
x + x + 2 + x + 4 + x + 6 = -28
4x + 12 = - 28
4x = - 40
x = -10
so the numbers are -10, -8, -6 ,-4.
7 ×5 = 35 and 5 × 7 = 35
ans is 35