Question

What is the value of x in the equation –x

Answer 1

Is the question
(i)\[x\left[\begin{matrix}5 & 12 \\ -2 & -3\end{matrix}\right]=\left[\begin{matrix}-35 & -84 \\ 14 & 21\end{matrix}\right]\]
Or
(ii)\[\left[\begin{matrix}5 & 12 \\ -2 & -3\end{matrix}\right]=x\left[\begin{matrix}-35 & -84 \\ 14 & 21\end{matrix}\right]\]

Answer 2

a.-40
b.-7
c.7
d.16

Answer 3

1

Answer 4

\[x\left[\begin{matrix}5 & 12 \\ -2 & -3\end{matrix}\right]=\left[\begin{matrix}-35 & -84 \\ 14 & 21\end{matrix}\right]\]\[x\left[\begin{matrix}5 & 12 \\ -2 & -3\end{matrix}\right]=-7\left[\begin{matrix}5 & 12 \\ -2 & -3\end{matrix}\right]\]

Can you get the answer now?!

Answer 5

so its -7

Answer 6

Yes :)