Question

The sum of x and y numbers is 20. The difference of the two numbers is 16. If the numbers are x and y, which system of linear equations represents the problem?

x plus y equals twenty; x plus y equals sixteen

x plus y equals twenty; x minus y equals sixteen

x minus y equals twenty; x plus y equals sixteen

x minus y equals twenty; x minus y equals sixteen

Answer 1

second one

Answer 2

"sum" means you add
"difference" means you subtract

so the system is

x+y = 20
x-y = 16

Answer 3

b