Answer:
Step-by-step explanation:
let me see if I can explain this...
3 + 5 = 8....those 2 numbers added together equals the total(8)...if u take the total(8) and subtract one of the numbers, it gives u the other number.
8 - 5 = 3 and 8 - 3 = 5
here's another one...
30 + 60 = 100
100 - 30 = 60 and 100 - 60 = 30
