Question

Dorothy is thinking of two numbers. The sum of the two numbers is 40 and the difference is 6. Write a system of equations and use the elimination method to find the two numbers.

Answer 1

x = 23

y = 17

Explanation:

x = 1st number

y = 2nd number

System of Equations:

x + y = 40

x - y = 6; this can be used as x = 6+y

6+y + y = 40

6 + 2y = 40

2y = 34

y = 17

x + 17 = 40

x = 23