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प्रश्न
(–23) × (42) = (–42) × _____.
रिकाम्या जागा भरा
उत्तर
(–23) × (42) = (–42) × (23).
Explanation:
(–23) × (42) = (–1) × (23) × (42)
= (–1) × (42) × (23) ......[∵ Multiplication is commutative, i.e. a × b = b × a]
= (–42) × (23)
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