Welcome :: Homework Help and Answers :: Mathskey.com
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

Most popular tags

13,459 questions

17,854 answers

1,446 comments

811,686 users

How to solve linear equation?

0 votes

Solve linear equation by substitution method.
3x-y=2
5x-2y=6

asked Mar 1, 2013 in ALGEBRA 1 by johnkelly Apprentice
Share this question
Google+ Facebook Twitter LinkedIn Reddit

2 Answers

0 votes

3x-y=2 -----------> y = 3x - 2
substitute y = 3x - 2 in 5x-2y=6
5x - 2(3x-2)=6
5x - 6x + 4 = 6
-x + 4 = 6
x=-2
substitute x=-2 in y = 3x - 2
y=3*-2 - 2
y = -6 - 2 = -8
(x, y) = (-2, -8)

answered Mar 1, 2013 by casacop Expert
0 votes

substitute y = 3x - 2 in 5x-2y=6
5x - 2(3x-2)=6
5x - 6x + 4 = 6
-x + 4 = 6
x=-2
substitute x=-2 in y = 3x - 2
y=3*-2 - 2
y = -6 - 2 = -8
(x, y) = (-2, -8)

solution is (-2,-8).

answered Mar 5, 2013 by Naren Answers Apprentice

Related questions

How to foil (u-4)(u+8)?
asked Nov 26, 2014 in ALGEBRA 1 by anonymous
Copyright © 2024 MATHSKEY. All Rights Reserved.         Sitemap|Terms Of Use|Disclaimer|Contact Us|FAQ
...