• Student Access
  • Teacher Access
  • FREEBIES
  • FAQs
  • CONTACT
MATH IN DEMAND
  • Student Access
  • Teacher Access
  • FREEBIES
  • FAQs
  • CONTACT
MATH IN DEMAND

Solving Systems of Equations by Substitution
Practice Answer

Picture
We have a couple of options: (1) we can multiple the top equation by 2, OR (2) we can multiple the top equation by -3.  There are more options but that would require multiplying both equations.  I am going to do option #1.  However, you should get the same answer regardless which option you choose. 
Picture
After multiplying the top equation by 2, we get the following equations:
Picture
Picture
Picture
GO BACK
(C) 2017 MATH IN DEMAND​