× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
e
5
e
4
4
d
4
o
3
p
3
t
3
3
m
3
p
3
m
3
f
3
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
FinnBinn FinnBinn
wrote...
Posts: 32
Rep: 2 0
11 years ago
(x+1)/3 + (x+2)/7 = 2

The answer is the back of the book tells me the answer is 29/10 but I have no idea how to get there!
Read 487 times
3 Replies

Related Topics

Replies
wrote...
#1
11 years ago
first let we multiply this by 3 times 7 = 21
((x+1)/3 + (x+2)/7 = 2 ) * 21
7(x+1) + 3(x+2) = 42
7x + 7 + 3x + 6 = 42
10x = 42-13
10x= 29
x= 29/10
u r welcome
wrote...
#2
11 years ago
21[(x+1)/3 + (x+2)/7] = 2*21
7x + 7 + 3x + 6 = 42
10x + 13 = 42
10x = 29
x = 29/10
 
wrote...
#3
11 years ago
Simplify

(x/3) + (1/3) + (x/7) + (2/7) = 2

Bring x's to one side

(x/3) + (x/7) = 2 - (2/7) - (1/3)

The equation can be written as

(1/3)x + (1/7)x = 29/21

Add 1/3 and 1/7 to get 10/21 so

(10/21)x = 29/21
x = 29/10
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  969 People Browsing
 106 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 327
  
 292
  
 4473
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 432
Previous poll results: Who will win the 2024 president election?