Looking for reliable answers? Westonci.ca is the ultimate Q&A platform where experts share their knowledge on various topics. Discover precise answers to your questions from a wide range of experts on our user-friendly Q&A platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

3x+4y=2 4x-4y=12 elimination

Sagot :

    3x+4y=2
 + 4x-4y=12         add them since 4y and -4y can cancel out
    7x=14              divide each side by 7
      x=2 

3x+4y=2   x=2
3(2)+4y=2        substitute 
  6+4y=2
-6       -6
      4y=-4        divide each side by 4
        y=-1
3x+4y=2
4x-4y=12
Add both
7x=14
X=2
Substitute value of x in first equation
Y=-1