Answered

Westonci.ca is the premier destination for reliable answers to your questions, provided by a community of experts. Explore our Q&A platform to find reliable answers from a wide range of experts in different fields. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

Use elimination to solve each system of equations
2x-y=-1
3x-2y=1

Sagot :

naǫ
[tex]2x-y=-1 \ \ \ |\times (-2) \\ 3x-2y=1 \\ \\ -4x+2y=2 \\ \underline{3x-2y=1 \ \ \ \ } \\ -4x+3x=2+1 \\ -x=3 \ \ \ |\times (-1) \\ x=-3 \\ \\ 2x-y=-1 \\ 2 \times (-3)-y=-1 \\ -6-y=-1 \ \ \ |+6 \\ -y=5 \ \ \ |\times (-1) \\ y=-5 \\ \\ \boxed{(x,y)=(-3,-5)}[/tex]
Panoyin
2x - y = -1
3x - 2y = 1
5x - 3y = 0
5x - 5x - 3y = 0 - 5x
3y = 0 - 5x
3y = 0 - 5x
 3        3
y = 0 - 5/3x
3x - 2(0 - 5/3x) = 1
3x + 8/3x = 1
5 1/4x = 1
5 1/4x =  1   
5 1/4    5 1/4
     x = 4/21
3(4/21) - 2y = 1
 4/7 - 2y = 1
-4/7         -4/7
         -2y = 3/7
         -2y = 3/7
          -2      -2
           y = -3/14
(x, y) = (4/21, -3/14)
Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. We hope this was helpful. Please come back whenever you need more information or answers to your queries. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.