your two numbers can be called n and n + 8, and together they add up to 38 So n + n + 8 = 38 which means n + n = 30 and since the n's are the same, you just cut the 30 in 2 equal pieces. 15 and 15. So n = 15, n + 8 = 23 15 + 23 = 38 :-) Hope this helps!