SOLUTION: can you solve this system to check my answers? 9x+8y=50 -3x+5y=14 I got (11.38, 9.625)

Algebra ->  Linear-equations -> SOLUTION: can you solve this system to check my answers? 9x+8y=50 -3x+5y=14 I got (11.38, 9.625)      Log On


   



Question 883859: can you solve this system to check my answers?
9x+8y=50
-3x+5y=14
I got (11.38, 9.625)

Found 2 solutions by Alan3354, josmiceli:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
9x+8y=50
-3x+5y=14 times 3 --> -9x + 15y = 42
I got (11.38, 9.625)
===============
9x + 8y = 50
-9x +15y = 42
---------------- Add
23y = 92
y = 4
-----
I got (11.38, 9.625)
Check your answers by subbing for x & y in the equations.
9x+8y=50
9*11.38 + 8*9.625 =? 50
102.42 + 77 =? 50 *** not equal

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
(1) +9x+%2B+8y+=+50+
(2) +-3x+%2B+5y+=+14+
Multiply both sides of (2) by +3+
and add the equations
(1) +9x+%2B+8y+=+50+
(2) +-9x+%2B+15y+=+42+
+23y+=+92+
+y+=+4+
and
(1) +9x+%2B+8%2A4+=+50+
(1) +9x+=+50+-+32+
(1) +9x+=+18+
(1) +x+=+2+
--------------
I get ( 2 , 4 )
Here's the plot of both lines to check answer: