Use substitution to solve the system of equations: n = 3m - 11 & 2m + 3n = 0

We're are given the following system of linear equations:



What we'll do, is substitute the  in the second equation by the definition of given in the first equation ():


We solve for from the previous equation:



Now we know .

In order to get the numerical value of we use the fact that in the first equation:


So . 

The answer is n=-2 and m=3.