SOLUTION: system of equations 10x+20y=50 -15x+20y=50

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Question 267033: system of equations
10x+20y=50
-15x+20y=50

Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
here is the system
(i) 10x+%2B+20y+=+50
(ii) -15x+%2B+20y+=+50
step 1 - multiply (i) by (-1) to get
(iii) -10x+-+20y+=+-50
step 2 - add (ii) and (iii) to get
(iv) -25x+=+0
step 3 - divide to get
(v) x+=+0
step 4 - find y and we get
(v) y+=+2.5