find A-1. Using A-1 solve the system of equations

if 

A= 

find A^–1. Using A^–1 solve the system of equations

2x – 3y + 5z = 11

3x + 2y – 4z = – 5

x + y – 2z = – 3

Solution 

Use formula

Plug the value we get

ð 

ð 

ð 

ð 

ð   

Hence answer is x =1 , y= 2  and z = 3