Chapter 4.6, Problem 34E

In Problems $31\text{-}38$, write each system as a matrix equation and solve using inverses.

$\begin{array}{l}2x_1+x_2=k_1\\ x_1+x_2=k_2\end{array}$

(A) $k_1=-1,k_2$

(B) $k_1=2,k_2$

(C) $k_1=2,k_2$