One number is 11 less than another. If their sum is increased by 8 the result is 79. Find the numbers

Answer 1

x = y - 11 --> x - y = -11

(x + y) + 8 = 79 --> x + y = 71

We can solve by elimination:

x - y = -11

x + y = 71

2x = 60

x = 30

x - y = -11

30 - y = -11

y = 41

x = 30, y = 41