Question

Solve the matrix equation. Picture Below:

Answer 1

And what is happening to A and B?

Answer 2

Yes, the equation part was cut off... we have A and B, but what are we to do with them?

Answer 3

i have no idea

Answer 4

What was directly above those matrices?

Answer 5

Well, I know they are not being multiplied. Are they added? Do they need to be put into reduced row echelon form?

Answer 6

hols on i put the wrong one

Answer 7

AH! That would make a difference!

Answer 8

OK, so you need to find X

Answer 9

sorry about that -_-

Answer 10

how do I do that?

Answer 11

Basically the same as in algebra for those.
a-x=b
a-x+x=b+x
a=b+x
a-b=b-b+x
a-b=x

Answer 12

i'm confuseddd

Answer 13

Well, we are doing exactly that, but with the matrices. The letters just represent the spots they are in. Do you know how to subtract one matrix from another?

Answer 14

kind of

Answer 15

\[\left[\begin{matrix}13 & -11 \\ 2 & 3\end{matrix}\right]\] is this right?

Answer 16

In general:\[\left[\begin{matrix}
a&b\\
c&d
\end{matrix}\right]
-
\left[\begin{matrix}
e&f\\
g&j
\end{matrix}\right]
=
\left[\begin{matrix}
a-e&b-f\\
c-g&d-j
\end{matrix}\right]\]YES! That is it!

Answer 17

so i'm right?

Answer 18

Yes, that would be the answer.

Answer 19

thank youuuu!!!

Answer 20

np. Have fun!