Question

Find the value of(16/81)-3/4

Answer 1

16 - 3
--- ---
81. 4

first of all we have to take the lcm of 81 and 4 =324

16. 4. 64
---- x =
81. 4. 324

3. 81. 243
--- x. =
4. 81. 324

243 -64. 179
----------- = ---------
324. 324

Answer 2

(16/81)-3/4
4/27-1/1
$\frac{4}{27} - \frac{1}{1} \\ \frac{4 - 27}{27} \\ \frac{23}{27}$
now put this in point