matrix method 3x3 equations solution x
– y + 2z = 7,3x + 4y – 5z = – 5 and 2x – y + 3z = 12
Use
formula
Plug
the value we get
ð 
ð 
ð 
ð 
ð 
Hence
answer is x =2 , y= 1 and z = 3
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