Methods on system of linear equations?

Answer 1

Let

• y be the column vector the dependent variable,
  
• M be the matrix of coefficients, and
• x be the column vector of variables

so that the system of equations may be represented by y = Mx.

Then the solution set is obtained by left-multiplying both sides by M^-1

that is x = M^-1*y

Answer 2

A system of equations can be solved using subtraction, addition, multiplication, and substitution.https://www.wikihow.com/Solve-Systems-of-Equations