What two multiples of - 224 add up to 20

-224+244=20

28 and - 8

Step-by-step explanation:

I would start by listing multiples you do know of 224.

1 and 224, 2 and 112, 4 and 56, 8 and 28, 16 and 14

Because the product is negative, one of the multiples has to be negative and one has to be positive.

take the difference of the bigger number minus the little.

so you'll get

223, 110, 52, 20, 2