SOLUTION: We r supposed to solve each system of equations by the addition method. Here is one problem 5x+6y=13 -5x+2y=11

Algebra ->  Linear-equations -> SOLUTION: We r supposed to solve each system of equations by the addition method. Here is one problem 5x+6y=13 -5x+2y=11      Log On


   

Question 1033052: We r supposed to solve each system of equations by the addition method. Here is one problem 5x+6y=13
-5x+2y=11
Found 2 solutions by solver91311, josmiceli:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


What does "We r" mean? Standard American or British English is written here. Thank you for contributing to mutual understanding in the future.

John

My calculator said it, I believe it, that settles it

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Add the equations
+5x+%2B+6y+=+13+
+-5x+%2B+2y+=+11+
------------------
+8y+=+24+
+y+=+3+
------------
Now plug this result back into
either equation to find +x+
+5x+%2B+6%2A3+=+13+
+5x+%2B+18+=+13+
+5x+=+-5+
+x+=+-1+
---------------
check solutions:
+5%2A%28-1%29+%2B+6%2A3+=+13+
+-5+%2B+18+=+13+
+13+=+13+
OK
-------------------
+-5%2A%28-1%29+%2B+2%2A3+=+11+
+5+%2B+6+=+11+
+11+=+11+
OK