SOLUTION: solve the matrix equation x+[218] =[6 -1 8] [430] [-5 2 -7]

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Question 119196: solve the matrix equation
x+[218] =[6 -1 8]
[430] [-5 2 -7]
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Start with the given matrix equation 


x+[2 1 8] =[6 -1 8]
  [4 3 0]  [-5 2 -7]


Subtract the matrix 
[2 1 8]
[4 3 0]
from both sides 



x =[6 -1 8]-[2 1 8]
   [-5 2 -7][4 3 0]


Combine the matrices 


x =[6-2 -1-1 8-8]
   [-5-4 2-3 -7-0]


Subtract 



x =[4  -2  0]
   [-9 -1 -7]



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Answer:

So the matrix X is 



x =[4  -2  0]
   [-9 -1 -7]