Let * be a binary operation on the set I of integers, defined by … - Vidyadip

Question

Let * be a binary operation on the set I of integers, defined by a * b = 2a + b - 3. Find the value of 3 * 4.

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Answer

It is given that, a * b = 2a + b - 3 Now, 3 * 4 = 2 × 3 + 4 - 3 = 10 - 3= 7

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