# The sum of two numbers is 5 and their difference is 9. What are the two numbers?

### 22 Answers

- 2 months ago
The numbers are 7 and -2

- Narayanan PLv 52 months agoReport
7 and -2

verify

sum - > 7 + (-2) = 5

difference -> 7 - (-2) = 9 - Log in to reply to the answers

- Φ² = Φ+1Lv 72 months ago
(5+9)/2 = 7 and (5-9)/2 = -2

The two numbers are 7 and -2.

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- Engr. RonaldLv 72 months ago
x + y = 5

x - y = 9

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2x = 14

x = 7 answer//

x + y = 5

y = 5 - x

y = 5 - 7

y = - 2 answer//

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- Ian HLv 72 months ago
Their difference is 9 so they are

x and x - 9

The sum of those two numbers is 5

2x - 9 = 5

x = 7 the other is -2

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- llafferLv 72 months ago
The sum of two numbers is 5:

x + y = 5

Their difference is 9:

x - y = 9

You have a system of two equations with two unknowns. I'll solve this with elimination.

y's coefficients are already opposites so if I add the two equations together I get a third that has one unknown:

x + y = 5

x - y = 9

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2x = 14

x = 7

Now I can solve for y:

x + y = 5

7 + y = 5

y = -2

Your two numbers are:

7 and -2

They add to 5 and subtract to 9.

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