+0  
 
0
466
1
avatar

x+4y=8 2x-5y=29

Guest Feb 20, 2015

Best Answer 

 #2
avatar+85819 
+5

x+4y=8  2x-5y=29

Using the first equation, subtract 4y from both sides

So x  = 8 - 4y       and subbing this into the second equation foe x, we have

2(8 - 4y) - 5y = 29

16- 8y - 5y = 29   simplify

16 - 13y = 29       subtract 16 from both sides

-13y = 13             divide both sides by -13

y = -1 

And x = 8 - 4(-1)  = 8 + 4  = 12

 

CPhill  Feb 20, 2015
Sort: 

1+0 Answers

 #2
avatar+85819 
+5
Best Answer

x+4y=8  2x-5y=29

Using the first equation, subtract 4y from both sides

So x  = 8 - 4y       and subbing this into the second equation foe x, we have

2(8 - 4y) - 5y = 29

16- 8y - 5y = 29   simplify

16 - 13y = 29       subtract 16 from both sides

-13y = 13             divide both sides by -13

y = -1 

And x = 8 - 4(-1)  = 8 + 4  = 12

 

CPhill  Feb 20, 2015

15 Online Users

We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details