|
Question 415042: find two numbers who sum is -66 and whose difference is -116
Answer by algebrahouse.com(1659)   (Show Source):
You can put this solution on YOUR website! "find two numbers who sum is -66 and whose difference is -116"
x = one number
y = other number
x + y = -66 {sum is -66}
x - y = -116 {difference is -116}
------------
2x = -182 {added the two equations together}
x = -91 {divided both sides by 2}
x + y = -66 {top equation}
-91 + y = -66 {substituted -91, in for x, into top equation}
y = 25 {added 91 to both sides}
Two numbers are -91 and 25
*To check*
-91 + 25 = -66 {sum is -66}
-91 - 25 = -116 {difference is -116}
www.algebrahouse.com
|
|
|
| |
