Consider the following system of equations.

x1	+	x2	+	x3	=	b1
x1		x2	+	x3	=	b2
x1		2x2		x3	=	b3

(a)Write the system of equations as a matrix equation.

	x1
x2
x3

=

	b1
b2
b3

(b)Solve the system of equations by using the inverse of the coefficient matrix.(i)where

b₁=3,b₂=3,b₃=0

(x₁,x₂,x₃) =

(ii)where

b₁=2,b₂=5,b₃=1

(x₁,x₂,x₃) =