Math, asked by rakes0256, 9 months ago

please tell answers it's urgent please answer with explanation ​

Attachments:

Answers

Answered by Mnemosyne
1

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

Similar questions