Top Posters
Since Sunday
A
6
j
6
c
5
m
5
C
5
d
5
s
5
n
4
i
4
d
4
d
4
J
4
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
irina irina
wrote...
Go to Answer
Posts: 919
Rep: 26 0
11 years ago
In Simultaneous Linear Equations
How can you tell when to use substitution or elimination, such as in the question
1. In five years time, a father will be three times as old as his son. Four years ago, the father was four times as old as his son. Find their present ages.
Read 388 times
1 Reply
Replies
Answer accepted by topic starter
nyashanyasha
wrote...
#1
Posts: 11
Rep: 0 0
11 years ago
Sign in or Sign up in seconds to unlock everything for free
This verified answer contains over 150 words.
1

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  949 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 261
  
 252
  
 328
Your Opinion
Who's your favorite biologist?
Votes: 587
Previous poll results: Do you trust social media networks with protecting your privacy?