The sum of two numbers is -7. The greater number minus the lesser number is 9. Which system of linear equations can be used to find the two numbers?

Answer 1

Let x be the smaller number and

let y be the bigger number

The sum of two numbers is -7.

x+y = -7

The greater number minus the lesser number is 9. y-x = 9

So the system of linear equations used to find the two numbers will be:

x+y = -7

y-x = 9