Question: solve system of equations from mapleTA

For a question i'm trying to make for my students i need to solve a system of two linear equations, of which the coefficients are determined by predefined random variables. After that i need to assign the solution of the system to two variables. So far i have attempted two approaches, neither of which seem to work:

Solve using inverse matrix:





Solve using 'solve' command:








So far neither approach seems to work.

Many thanks for any usefull tips!

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