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Question
Find the value of x, if 3x – 7 × 4x – 4 = 768.
Solution
Given: 3x – 7 × 4x – 4 = 768
⇒ 3x – 7 × 4x – 4 = 3 × 44
We get by equating the exponents
x – 7 = 1 and x – 4 = 4
x = 1 + 7 and x = 4 + 4
x = 8 and x = 8
As a result, the value of x is 8.
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