please tell answers it's urgent please answer with explanation
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Answer:
a = 10
Step-by-step explanation:
So, when exponents of the same number are divided, the exponent of the denominator subtracts itself from the exponent of the numerator.
2401 = 7^4
Therefore,
7^(3a-1)-(2a+5) = 7^(3a-1-2a-5) = 7^(a-6) = 7^4
Taking away 7, as it is common,
a-6 = 4
--> a = 6+4 = 10
Therefore, a = 10
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