Answers

2016-07-18T15:04:18+08:00
X=1st number;
y=2nd number;

x+2y=18;....1)
2x-y=11;......2)
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x2 ..2nd eq;

x+2y=18;
4x-2y=22
------------;
5x    =40
 x=8;...1st number
2y=18-8;
y=5...2nd number

1 5 1