Question

The sum of two numbers is 42 and the difference is 12.What are the numbers?

Answer 1

x+y=42
x-y=12
x=12+y
12+y+y=42
12+2y=42
2y=30
y=15
x=12+15=27

Answer 2

(Assume x and y are the numbers)

Answer 3

x + (x+12)=42 2x +12 =42 2x =30 x=15

Answer 4

It should be 2 numbers.One large number and one small number.