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})
Correct Answer: Option D
Explanation
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})