Date: Tue, 6 Oct 1998 16:24:37 -0600 (CST) Subject: algebra Name: Jason
Who is asking: Student
Question:
2x+3y=4
4x+5y=6 The solution is always x=-1, y=2
Thank you Hi Jason In any of the pairs of equations that you have if you subtract the first from the second you get x + y = 1 or x = 1 - y. All of these equations have the pattern ax + (a+1)y = a + 2 so substituting x = 1 - y into this equation gives
a(1-y) + (a+1)y = a+2 Hence y = 2 and since x + y = 1, x = -1.
Cheers |

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