Answers

2014-08-01T22:34:30+08:00
2014-08-01T22:35:22+08:00
3x-12y=30
*divide by 3*
x-4y=10

5y+10x=100
*divide by 5*
y+2x=20
x=4y+10
y+2(4y+10)=20
y+8y+20=20
9y=0
y=0
10x=100
x=10
(10,0)

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