Answers

2014-03-07T21:50:59+08:00
Eq 1: x + y = 50
Eq 2: x - y = 20

By using Elimination method, we can get x = 35 and y = 15. :)
gets?
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2014-03-08T14:05:24+08:00
X=35 and y=15
checking:
x + y= 50
35+15=50
50=50

and

x-y=20
35-15=20
20=20
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