Question

Solve the matrix equation.

Answer 1

How do you do matrix subtraction?

Answer 2

you can use the same idea as
x - 1 = 2
add +1 to both sides
x-1+1 = 2+1
x = 3

except now you add the same matrix to both sides.

Answer 3

Matrix subtraction (and addition) is just a straightforward subtraction (or addition) of the corresponding values in each matrix.

\[\left(
\begin{array}{cc}
a & b \\
c & d \\
\end{array}
\right)-\left(
\begin{array}{cc}
e & f \\
g & h \\
\end{array}
\right) = \left(
\begin{array}{cc}
a-e & b-f \\
c-g & d-h \\
\end{array}
\right)\]

Answer 4

I got {{2, -14},{-6,10}}

Its close but it doenst fit any of my multiple choices .

Answer 5

No, you didn't do that quite right.

\[\left(
\begin{array}{cc}
a & b \\
c & d \\
\end{array}
\right)-\left(
\begin{array}{cc}
2 & -8 \\
-4 & 2 \\
\end{array}
\right)=\left(
\begin{array}{cc}
4 & -6 \\
2 & -8 \\
\end{array}
\right)\]

\[a -2 = 4\]\[b-(-8) = -6\]\[c-(-4) = 2\]\[d-2 = -8\]

Answer 6

Oh okay! I got it now, thank you :)