Question 216963
{{{4x+y=7}}}
{{{x-2y=13}}}


The following will solve the linear system equations using substitution.


*[invoke linear_substitution "x", "y", 4, 1, 7, 1, -2, 13 ]


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 

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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