Question

que 8 solve the following ​

Answer 1

Give that :-

$x = \frac{3}{4} \\ \\ y = \frac{12}{21} = \frac{4}{7} \\ \\ \\ z = \frac{4}{7}$

Now,

$(x - y) - z \\ \\ = ( \frac{3}{4} - \frac{4}{7}) - \frac{4}{7} \\ \\ \\ = \frac{5}{28} - \frac{4}{7} \\ \\ \\ = \frac{5 - 16}{28} = \frac{( - 11)}{28}$

Now, second option :-

$x - (y -z) \\ \\ \\ = \frac{4}{3} - ( \frac{4}{7} - \frac{4}{7)} \\ \\ \\ = \frac{4}{3} - 0 \\ \\ \\ \\ = \frac{4}{3}$

On comparing both the values :

We find that :-

(x-y) - z≠x-(y-z)

Hence,

Proved!

Answer 2

Answer:

Step-by-step explanation:

Answer given below

Hope it might help u