SOLUTION: Solve the linear system: x+2y= 1 -x+y= -1

Question 38555: Solve the linear system: x+2y= 1

-x+y= -1
Answer by lyra(94) (Show Source): You can put this solution on YOUR website!
Here's two ways to solve your problem:

Solved by pluggable solver: Linear System solver (using determinant)

Solve:

Any system of equations:

has solution

(x=1, y=0}

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION

Solve:
We'll use substitution. After moving 2*y to the right, we get:
, or . Substitute that
into another equation:
and simplify: So, we know that y=0. Since , x=1.

Answer: .

Hope this helps and feel free to contact me with further questions,
lyra

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