3x+2y-z=-1 x+y+z=6 3x+y+2z=15

Question asked by: jimmywong

Asked on: 14 Oct 2009

3x+2y-z=-1
x+y+z=6
3x+y+2z=15

These are what are known as simultaneous equations.

The trick is to use a method called substitution to place values from one equation into others in such a way as they reduce the number of variables and allow you to solve the question.
By: knowitall
Replied at: 18 Oct 2009
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