Question on: WAEC Mathematics - 2015
If m = 4, n = 9 and r = 16., evaluate (\frac{m}{n}) - 1(\frac{7}{9}) + (\frac{n}{r})
A
1\(\frac{5}{16}\)
B
1\(\frac{1}{16}\)
C
\(\frac{5}{16}\)
D
- 1\(\frac{37}{48}\)
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Correct Option: D
If m = 4, n = 9, r = 16,
then (\frac{m}{n}) - 1(\frac{7}{9}) + (\frac{n}{r})
= (\frac{4}{9}) - (\frac{16}{9}) + (\frac{9}{16})
= (\frac{64 - 258 + 81}{144})
= (\frac{-111}{144})
= - 1(\frac{37}{48})
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