+0  
 
+1
233
2
avatar

How do you, using elimination, solve 6x+4y=34 and 6x+15y=78?

Guest Sep 25, 2017
 #1
avatar+87635 
+2

 6x+4y=34        multiply through by  -1   →    -6x  - 4y  - 34       (1)

 6x+15y=78          (2)

 

Add (1)  and (2)   and we get

 

11y  = 44    divide both sides by 11

y  = 4

 

Put this into any equation to solve for x

 

6x + 4(4)   = 34

6x + 16  = 34   subtract 16 from both sides

6x  = 18     divide both sides by 6

x  = 3

 

 

 

cool cool cool

CPhill  Sep 25, 2017
 #2
avatar+319 
+2

Good Job CP (Your new nickname lmao) You have done it once more again ^^... You are very nice to help people out with their math problems ^^ Good Job CP

knownhappyman68  Sep 25, 2017

4 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.