ACT 2021 December(E23) Math Question 8 Explanation - ACT Helper

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2021 December(E23) Math Question 8
Matrices
- Addition & Subtraction
Adding & subtracting matrices
Choice H
$\begin{array}{r} [\begin{array}{c} 9 & 2 \\ - 4 & 1 \end{array}] + [\begin{array}{c} - 6 & 8 \\ 7 & 6 \end{array}] = [\begin{array}{c} 9 - 6 & 2 + 8 \\ - 4 + 7 & 1 + 6 \end{array}] \end{array}$ $\begin{array}{r} = [\begin{array}{c} 3 & 10 \\ 3 & 7 \end{array}] \end{array}$
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