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a) (i) (x-14)(2x-7)

(ii) x = 14 or x = 3.5

b)

i) [tex]\frac{7}{n+7}[/tex]

ii) Take n to be 8

[tex]\frac{7}{8+7}[/tex]

[tex]\frac{7}{15}[/tex] that DOESN'T round down to [tex]\frac{2}{5}[/tex]

Is that all correct so far?

If so I will post the next (really hard) question)...

Thanks