What is the formula for the sum of two whole numbers is 72. the difference is 48 what are the two numbers

X+y=72

x-y=48

Solve for one of the variables.

x=48+y

Then plug into the other equation and solve.

(48+y) + y=72

48+2y=72

2y=24

y=12

Use that answer in one of the formulas to find the other variable.

x+12=72

x=60

You can plug the answers into the original formulas to check the answers.