OpenStudy (anonymous):

Find the sum or difference: picture below:

OpenStudy (anonymous):

OpenStudy (anonymous):

@jim_thompson5910 @Mertsj

OpenStudy (mertsj):

To add matrices, add the corresponding entries.

OpenStudy (anonymous):

ikno that but the 2x3 matrices confuse me

OpenStudy (mertsj):

What number is in the first row and first column of the first matrix?

OpenStudy (anonymous):

-9

OpenStudy (mertsj):

What numer is in the first row and first column of the second matrix?

OpenStudy (anonymous):

-2

OpenStudy (mertsj):

What is -9 + (-2)?

OpenStudy (mertsj):

@aditya96 Please let the asker answer the questions.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

-11

OpenStudy (mertsj):

Put that number in the first row and first column of your answer matrix. Proceed similarly for the remainder of the entries.

OpenStudy (anonymous):

\[\left[\begin{matrix}-11 &-1 & 14 \\ -3 & 14 & 1\end{matrix}\right]\] This is what I got

OpenStudy (anonymous):

|dw:1369496664429:dw| could not draw any better hope it helps