Question

two numbers have a sum of 1,212 and a difference of 518. What are the two numbers? (This is common core so i have to show my work)

Answer 1

You have x-518 and x

(x-518) + x = 1,212
combine xs
2x - 518 = 1,212
2x = 1,730
x = 865

Since 865 is x, 865 - 518 = 347 is your second number