8×6-8\times -6

1
Ignore any negative sign for now.
8×68\times 6

2
Draw 88 groups of 66.


3
Now consider the signs. Two negatives make a positive.
8,6Positive-8,-6 \rightarrow \text{Positive}

4
Therefore, 8×6=48-8\times -6=48.
4848

Done

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