Jadebonin
Jadebonin
08-12-2014
Mathematics
contestada
What is 2x-y=-1
3x-2y=1
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missbunny
missbunny
08-12-2014
To solve just isolate y from 2x-y=-1 to get y=2x+1. Then substitute y=2x+1 into 3x-2y=1. So it should be this: 3x-2(2x+1)=1. Distribute to get 3x+4x-2=1. Add the x's to get 7x-2=1, add two to both sides to get 7x=3 and divide to finally get x=3/7.
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