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How many solutions does this problem have x-3y=-1,-x-3y=1
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How many solutions does this problem have x-3y=-1,-x-3y=1

User Ballzak
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1 Answer

3 votes
x - 3y = -1
-x - 3y = 1
---------------add
6y = 0
y = 0

x - 3y = -1
x - 3(0) = -1
x = -1

one solution...and that is (-1,0)
User Matt Harris
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