Answered

It solves the systems of equations.
Discovers which is the method indicated to develop the exercises.
the indicated methods are:
1. Determinants
2. Equalization
3. Reduction
4. Substitution
Please I them am grateful very much indeed for pardon for so many inconveniences.:)

It solves the systems of equationsDiscovers which is the method indicated to develop the exercisesthe indicated methods are1 Determinants2 Equalization3 Reducti class=
It solves the systems of equationsDiscovers which is the method indicated to develop the exercisesthe indicated methods are1 Determinants2 Equalization3 Reducti class=
It solves the systems of equationsDiscovers which is the method indicated to develop the exercisesthe indicated methods are1 Determinants2 Equalization3 Reducti class=
It solves the systems of equationsDiscovers which is the method indicated to develop the exercisesthe indicated methods are1 Determinants2 Equalization3 Reducti class=
It solves the systems of equationsDiscovers which is the method indicated to develop the exercisesthe indicated methods are1 Determinants2 Equalization3 Reducti class=


Answer :

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3. Reduction

For example,   11x - 3y = 69;
                     - 3x + 3y = 3;
                    ______________
                      8x + 0y = 72 => x = 72 / 8 => x = 9;
                      then, -27 + 3y = 3 => 3y = 30 => y = 30 / 3 => y = 10.