Question

Solve the following systems of equations:

x − y + z = 4
x − 2y − 2z = 9
2x + y + 3z = 1

Answer 1

The given equations are:

…

First of all we find the value of

Put the value of in equation, we get

Put the value of and in equation in we get

Multiply equation by and add equations and, we get

Put the value of in equation, we get

Put the value of and in equation we get

Hence the value of, and.