Question

One number exceeds another number by 12. The sums of the numbers is 80. What are the numbers?

Answer 1

Take the two numbers to be x and x+12, then add them

Answer 2

x + y = 80
x = y + 12

y = 80 - x
y = x - 12

y = y

80 - x = x - 12

x + x = 80 + 12
2x = 92
x = 46
y = 34