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.
Aug 09, 16 01:40 PM
Average age of Dipu and Apu is 22 years. Average age of Dipu and Tipu is 24 years. Age of Dipu is 21 years. What are the ages of Apu, and tipu ? Let
New math lessons
Your email is safe with us. We will only use it to inform you about new math lessons.
Our awards! Disclaimer 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 Take our survey Algebra ebook Fraction ebook Geometric formula ebook Fractions book Math videos
Ask a math question
Copyright © 2008-2016. Basic-mathematics.com. All right reserved