Question 380667
The sum of two numbers is 20. Their difference is 4.
A. Write a system of equations that describes this situation
:
Write an equation for each statement:
"The sum of two numbers is 20."
x + y = 20
:
" Their difference is 4."
x - y = 4
:
Easy elimination, when you add
x + y = 20
x - y = 4