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Question
If 6A × B = A 8 B, then the value of A – B is ______.
Options
–2
2
–3
3
Solution
If 6A × B = A 8 B, then the value of A – B is – 2.
Explanation:
6A × B = A 8 B
AB = B
⇒ A = 1
6B = A8
⇒ 6B = 18
⇒ B = 3
A – B = 1 – 3 = – 2
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