SOLUTION: 4x+y=7 x-2y=13

Question 216963: 4x+y=7
x-2y=13
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!

The following will solve the linear system equations using substitution.

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: .

I hope the above steps and explanation were helpful.

For Step-By-Step videos on Introduction to Algebra,
please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and
for Trigonmetry please visit
http://www.FreedomUniversity.TV/courses/Trigonometry.

Also, good luck in your studies and contact me at
john@e-liteworks.com for your future math needs.

Respectfully,
Dr J
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