What is the solution to this system of linear equations?

12q + 3r = 15

–4q – 4r = –44

 The required solution is (q, r) = (-2, 13).

Step-by-step explanation:  We are given to find the solution to the following system of linear equations :

We will be solving the given system of equations by the method of ELIMINATION.

Multiplying equation (ii) by 3, we have

Adding equations (i) and (iii), we get

Substituting the value of r in equation (i), we get

Thus, the required solution is (q, r) = (-2, 13).

step-by-step explanation:

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because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.