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If you add 4+5+7 = 16, you can consider that Frank gets 4/16 of the sweets, Mary gets 5/16 and Seth gets 7/16. This because for every 4 sweets Frank gets, Mary gets 5 and Seth gets 7.

If there are ...

so step 1) remove the denominator by multiplying (4-a) by p. Therefore obtaining p(4-a) = 3a+5. step 2) multiply out to get 4p-ap = 3a+5 step 3) have all the a's on one side, and non a's on other side. th...

Chinese characters appear to have little correlation at the start and because there are so many of them, they are hard to get your head round. Repetition is key to learning characters. it seems obvious, b...

‘The Flea’ is an erotic poem composed in the Elizabethan period, in the metaphysical style of writing. The sexual, unconventional content in contrast with the traditional iambic meter sets up the poem’s p...

There are two types of wave: longitudinal and transverse. It's really important to learn their properties as this is a very common question. The main thing to remember is longitudinal waves have oscillati...