Question

21. If 21 = 3' = 6 - , then
then prove that -+-+
+-+-=0.
X Y Z
1
22. Show that
=1
+
1+xa
a-b
b-a
1 + x
b+c
***
76
23. Show that
= 1
pos
xe
***
9
24. If 271
find the value of x.
31
25. If 251-1 = 523-1 -100, then find the value of x.
1​

Answer 1

Answer:

I don't understand ????

Step-by-step explanation: