Question

Find x. It's an indices question.

Answer 1

Hey Buddy

Here's the answer

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Firstly we'll inverse the fraction and if we inverse the fraction the sign of power changes

For example

1 / x^2 = x^(-2)

Now Solving

We can write 343 as 7^3

Now,

==> 1 / 7^(x - 8) = 7^3

==> 7^[-( x - 8 )] = 7^ 3

Now by comparing both sides

==> - ( x - 8 ) = 3

==> 8 - x = 3

==> x = 8 - 3

==> x = 5

HOPE OT HELPS

:)