Question

Using matrices, solve the following system of equations.
$\pink\dashrightarrow$x-y + 2z = 7,
$\pink\dashrightarrow$3x + 4y - 5z = -5
$\pink\dashrightarrow$2x - y + 3z = 12​

Answer 1

Step-by-step explanation:

The given system of equation can be written in matric form as AX = B

The given system of equation can be written in matric form as AX = BHence A-1 exist and system have unique solution.

The given system of equation can be written in matric form as AX = BHence A-1 exist and system have unique solution.finding cofactors

The given system of equation can be written in matric form as AX = BHence A-1 exist and system have unique solution.finding cofactorsFinding X = A^-1B

The given system of equation can be written in matric form as AX = BHence A-1 exist and system have unique solution.finding cofactorsFinding X = A^-1BEquating the corresponding elements, we get

The given system of equation can be written in matric form as AX = BHence A-1 exist and system have unique solution.finding cofactorsFinding X = A^-1BEquating the corresponding elements, we getx = 2, y = 1, z = 3

Hope its help...