If A=43123-810-4, B=234192-71-1 and C=8341-23 then verify thatA + (B + C) = (A + B) + C

If $A = (\begin{matrix} 4 & 3 & 1 \\ 2 & 3 & - 8 \\ 1 & 0 & - 4 \end{matrix}), B = (\begin{matrix} 2 & 3 & 4 \\ 1 & 9 & 2 \\ - 7 & 1 & - 1 \end{matrix}) a n d C = (\begin{matrix} 8 & 3 & 4 \\ 1 & - 2 & 3 then verify that \end{matrix})$
A + (B + C) = (A + B) + C

Matching exercise

Match the items on the right to the items on the left.

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