Simple Question

Posted on 2004-03-23
Last Modified: 2012-06-21
I have a linear equation I am having trouble solving:

x/5 + 2y = 8/5
3x/5 + y/2 = -7/10
5(1/5x+2y = 8/5)
x + 10y = 8
x = -10y + 8

10(3x/5 + y/2 = -7/10)
2(3x) + 5y = -7

2[3(-10y + 8)] + 5y = -7
2[-30y + 24] + 5y = -7
-60y + 48 + 5y = -7
-55y + 48 = -7
-55y = -55
y = 1

x = -10(y) + 8
x = -10 + 8
x = -2

is the solution set (-2,1) ?
Question by:BrianGEFF719
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
LVL 84

Accepted Solution

ozo earned 250 total points
ID: 10663109

Featured Post

Announcing the Most Valuable Experts of 2016

MVEs are more concerned with the satisfaction of those they help than with the considerable points they can earn. They are the types of people you feel privileged to call colleagues. Join us in honoring this amazing group of Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
logic in c# 10 85
A second problem of optics 12 140
Just learning algebra / need solution explained 4 83
How are Pi and the degrees in a circle related? 16 42
How to Win a Jar of Candy Corn: A Scientific Approach! I love mathematics. If you love mathematics also, you may enjoy this tip on how to use math to win your own jar of candy corn and to impress your friends. As I said, I love math, but I gu…
Have you ever thought of installing a power system that generates solar electricity to power your house? Some may say yes, while others may tell me no. But have you noticed that people around you are now considering installing such systems in their …
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below.…

759 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question