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​Q30: Answers – Paper 3 – June 2018
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Working
a) Work out       a + b + c

​b) Show that       a + 2c = kb,       where k is an integer.
Question
30)
a) Work out       a + b + c
[2 marks]​

b) Show that       a + 2c = kb,       where k is an integer.
[2 marks]​​