(−12) $×$ (−9) − 6 $×$ (−8) is equal to

(a) 156 (b) 60 (c) −156 (d) − 60

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Solution

(−12) $×$ (−9) − 6 $×$ (−8) = (12 $×$ 9) − 6 $×$ (−8)
= 108 − 6 $×$ (−8)
= 108 + 6 $×$ 8
= 108 + 48
= 156
Hence, the correct option is (a).

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