Question 211951
{{{3x-y=-13}}}
{{{2x+y=-9}}}


The following solves the system of equations by substitution.


*[invoke linear_substitution "x", "y", 3, -1, 13, 2, 1, -9 ]


I hope the above steps were helpful.


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


Good luck in your studies!


Respectfully,
Dr J