Question

The sum of two numbers is 10. The difference of the two numbers is 14. Find the two numbers.

Answer 1

Answer: 14

Explanation:

Set the equation: 2 number (x and y)

x + y = 14

and x -y + 10

if you each equation by positive 2, one gets 2x + 2y = 28 and 2x - 2y = 20

The 't terms cancel out or equal zero when adding, so 4x=48, divided by 4 on each side and x or the first number equals 12.