Subject :IMO Class : Class 7
Find out the incorrect step in simplification of 
Step-1: 
(Open bracket)
Step-2: 
(Combining like terms)
Step-3: 
(Taking L.C.M. on both L.H.S. and R.H.S.)
Step-4: -p = 75
AStep-1
BStep-2
CStep-3
DStep-4
Ans 1:
Class : Class 7
STEP 3 AS THEY ADDED 3 TO 72/7 WITHOUT MAKING THE DENOMINATORS EQUAL WHICH IS NECESSARY IN FRACTION ADDITIONS
Ans 2:
Class : Class 10
STEP-3 IS WRONG HERE 3 IS ADDED TO 72 THEN UPON 7 IS DONE WHICH IS WRONG WE HAVE TO TAKE LCM CORRECTLY BY MAKING DENOMINATORS EQUAL.