SV 5: Unit J Concept 3: Solving 3-Variable Systems with Matrices

The part of this problem that a student needs to pay attention to is how to find the equations to get certain numbers in their spots. The student needs to make sure that when solving for the row, he or she is careful with their math and doesn't make a mistake, because one error or miscalculation could make the whole matrix wrong, and then he or she would have to start over. In addition, the student needs to pay attention to the equations in the system before putting them in the matrix, seeing which ones would be more convenient to place in the rows. For example, if an equation has "0x", it is smart to put it in the third row, because the first step is to find a 0 in the bottom left hand corner. Since there is already a 0, the student will have less work to do.