Really tough GCSE IGCSE Maths Indices Question

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[@memesick4ever]

This is considered tough?!

[@shinninglightministry7050]

Am guessing you're doing A Levels😂😂😂?

[@Unstoppableyou4ever]

x=14/13

[@person42069]

Let's go I got it before the explanation (and I am year 8)
Edit: first