Saturday

July 26, 2014

July 26, 2014

Posted by **Cory** on Saturday, July 7, 2012 at 3:55pm.

The difference between two numbers is 3, and the sum of those two numbers is 21. What are the two numbers?

- algebra -
**Ms. Sue**, Saturday, July 7, 2012 at 4:00pmx - y = 3

x + y = 21

x = 3 + y

3 + y + y = 21

2y = 18

y = 9

x - 9 = 3

x = 12

**Related Questions**

algebra - Solve by setting up the proper equation to describe the facts given ...

ALGEBRA - Solve by setting up the proper equation to describe the facts given ...

algebra - Solve by setting up the proper equation to describe the facts given ...

math - Solve by setting up the proper equation to describe the facts given and ...

math (this correct) - What is the difference between an equation and an ...

Math - What is the difference between an equation and an expression? Include an ...

Algebra - What is the difference between and equation and an expression? Include...

math - What is the difference between an equation and an expression? Include an ...

MAth - What is the difference between an equation and an expression? Include an ...

algebra - What is the difference between an equation and an expression? Include ...