SOLUTION: 3x-5y=20 2x+6y=4

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Question 363797: 3x-5y=20
2x+6y=4
Answer by checkley77(12844) About Me  (Show Source):
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3x-5y=20 multiply by 2
2x+6y=4 multiply by -3 & add
6x-10x=40
-6x-18y=-12
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-28y=28
y=28/-28
y=-1 ans.
3x-5*-1=20
3x+5=20
3x=20-5
3x=15
x=15/3
x=5 ans.
2*5+6*-1=4
10-6=4
4=4