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/sci/ - Science & Math

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>> No.9074193 [View]
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9074193

I saw this advert on a site. Now I've only ever done A-level maths so after this ad popped up a few times I thought I may as well try to work it out.
It's basic algebra but no amount of rearranging can help me out. Is it even possible? If so what am I missing out? Sorry again for the stupid question but it really is bugging me.

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