+0  
 
+10
448
5
avatar+1833 

Solve for X

\(\begin{bmatrix} 4 && -4 && 7 \\ 8 && 2 && 1 \end{bmatrix} +X= \begin{bmatrix} -3 && 4 && 6\\ -17 && 9 && 18 \end{bmatrix}\)

 Feb 7, 2017

Best Answer 

 #5
avatar+25480 
+5
 Feb 10, 2017
 #2
avatar+30620 
+5

Just subtract the matrix on the left from the matrix on the right.  You do this element by element.  For example the top left element will be -3 -4 = -7,  the one to its right will be 4 - (-4) = 8, and so on.

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 Feb 7, 2017
 #3
avatar+25480 
+10

Solve for X

\(\begin{bmatrix} 4 && -4 && 7 \\ 8 && 2 && 1 \end{bmatrix} +X= \begin{bmatrix} -3 && 4 && 6\\ -17 && 9 && 18 \end{bmatrix}\)

 

 

\(\begin{array}{|rcll|} \hline \begin{bmatrix} 4 && -4 && 7 \\ 8 && 2 && 1 \end{bmatrix} +X &=& \begin{bmatrix} -3 && 4 && 6\\ -17 && 9 && 18 \end{bmatrix} \\ X &=& \begin{bmatrix} -3 && 4 && 6\\ -17 && 9 && 18 \end{bmatrix} -\begin{bmatrix} 4 && -4 && 7 \\ 8 && 2 && 1 \end{bmatrix} \\ X &=& \begin{bmatrix} -3-4 && 4-(-4) && 6-7 \\ -17-8 && 9-2 && 18-1 \end{bmatrix} \\ \mathbf{ X } & \mathbf{=} & \mathbf{ \begin{bmatrix} -7 && 8 && -1 \\ -25 && 7 && 17 \end{bmatrix} }\\ \hline \end{array} \)

 

laugh

 Feb 7, 2017
 #4
avatar+1833 
+10

I through it is \(X=\begin{bmatrix} 7 && 8 && 4\\ -25 && 2 && 17 \end{bmatrix}\)

EighthMersennePrime  Feb 10, 2017
 #5
avatar+25480 
+5
Best Answer

see matrix-subtraction-calculator:

http://ncalculators.com/matrix/matrix-subtraction-calculator.htm

 

laugh

heureka Feb 10, 2017

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