The sum of two numbers is 39. Their difference is 21. What are the two numbers?

Question

asked May 28, 2021 219k views

2 Answers

Prasanna Raghu · Answer 1 · 2021-06-02T01:06:49+0000

Answer:

30 and 9

Step-by-step explanation:

x+y=39 , x-y=21

Solve for x:

x+y=39 , x-y=21

x= 30

Substitute x with 30:

(30)+y=39 , (30)-y=21

Solve for y:

y=9