SOLUTION: Set up a system of linear equations and solve for the indicated quantities
The sum of two positive numbers is 26. Their difference is 14. Find the numbers.
x + y = 26,
x - y = 14
Add the equations. You will get
2x = 26 + 14 = 40 ====> x = = 20.
Then from the first equation
20 + y = 26 ====> y = 26 - 20 = 6.
Answer. The numbers are 20 and 6.