× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
k
1
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
ashyV ashyV
wrote...
Posts: 59
Rep: 0 0
11 years ago
This is the equation:

12b+7f=685
9b+8f=599

This is my solution:

12b+7f=685                   12b+7f=685
(9b+8f=599)-1 1/3         -12b-10 2/3f= -798 2/3
                                +___________________
                                      -3 2/3f= 113 2/3
                                            f=31

12b+7(31)=685
12b+217=685
    12b=468
      b=39

_____________________________ _______

But for this equation, I can't seem to find the solution:

16n+8s=2.48
14n+11s=2.69

Thank You~
Read 446 times
1 Reply

Related Topics

Replies
wrote...
#1
11 years ago
It is probably best to try and eliminate the s terms. So, multiply the first equation by 11 and the second one by 8. You get this:

176n + 88s = 27.28
112n + 88s = 21.52

Subtract to eliminate. You get:

64n = 5.76
n = 0.09

Solve for s by substituting 0.09 for n.

16(0.09) + 8s = 2.48
1.44 + 8s = 2.48
8s = 1.04
s = 0.13
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  870 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 118
  
 137
  
 315
Your Opinion
How often do you eat-out per week?
Votes: 79
Previous poll results: Which of the following is the best resource to supplement your studies: