by isabela del castillo
(houston tx )
y=2xx+y=21Replace y = 2x into the second equation.we get:x + 2x = 21we get 3x = 21divide both sides of the equation by 33x/3 = 21/3x = 7replace x in either y = 2x or x + y = 21y = 2 times 7y = 14
Click here to post comments
Join in and write your own page! It's easy to do. How? Simply click here to return to System of linear equations.
New math lessons
Your email is safe with us. We will only use it to inform you about new math lessons.
Follow me on Pinterest
Jan 13, 17 01:28 PM
What is the harmonic mean? How to calculate the harmonic mean?
Our awards! Disclaimer Best Pinterest Advertise on this site Facebook page Google+ page basic mathematics study group
Illustrated fractions Educational math software Math jobs Best teacher sites now Teacher/Students tools Search math jobs
Math tutoring service Algebra ebook Fraction ebook Geometric formula ebook Fractions book Math videos
Ask a math question
Copyright © 2008-2016. Basic-mathematics.com. All right reserved