Need to get the answer to this problem by using elimination: =x-3y=61 and 2x+y=-7
Friday, July 23rd, 2010Solution:
- 2x - =y=61
- 2x + y= =7
If you subtract the second equation from the first, you can eliminate x and you are left with -4y = 68.
So y = 3D -17, and plugging this into the first equation we can figure out
y: 2x = (-51)=61,
so x = 5
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