We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
101
1
avatar

Two numbers total 12, and their difference is 18. Find the smaller of the two numbers.

 

If you can, please show me how you did it because I can not figure this out

 Feb 25, 2019
 #1
avatar+104756 
+2

 x + y = 12

x - y =  18       add these

 

2x = 30       divide both sides by 2

 

x = 15

 

And using    x + y = 12    we have

 

15 + y = 12       subtract  15 from both sides

 

y = -3

 

So  (x,y)  = (15, -3)    ⇒  the smaller number is -3

 

 

cool cool cool

 Feb 25, 2019
edited by CPhill  Feb 25, 2019

27 Online Users

avatar
avatar
avatar
avatar