SOLUTION: what is the system of linear equations {4x+y=7 {x-2y=13 i am at a loss...

Question 216318: what is the system of linear equations {4x+y=7
{x-2y=13
i am at a loss...
Answer by ichudov(507) (Show Source): You can put this solution on YOUR website!

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION

Solve:
We'll use substitution. After moving 1*y to the right, we get:
, or . Substitute that
into another equation:
and simplify: So, we know that y=-5. Since , x=3.

Answer: .

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