Question
If $A = [4 7]$ and $B = [3 l],$ find : $2A - 3B$
✓
Answer
$A =\left[4,7\right]_{1 \times 2} B $
$=\left[3 1\right]_{1 \times 2}$
$2 A -3 B =\left[8 14\right]-\left[9 3\right]$
$=|-1 11|_{1 \times 2}$
$=\left[3 1\right]_{1 \times 2}$
$2 A -3 B =\left[8 14\right]-\left[9 3\right]$
$=|-1 11|_{1 \times 2}$
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