Find two numbers with aTotal of 500 and a difference of 156
Let the two numbers be X and Y, then
X + Y = 500 --- two numbers with a sum of 500
X - Y = 156 --- two numbers with a difference of 156
now add the two equations
2X = 656
X = 328
Y = 500 - 328 = 172
The two numbers are: 172 and 328