Answer (a) :-
Hence , The value of x is 56 .
Answer ( b) :-
Hence , The value of y is 2 .
Answer ( c) :-
Hence , The value of x is 6 .
Answer ( d) :-
Hence , The value of y is 3 .
Answer ( e) :-
Hence , The value of k is 61/6 .
Answer ( f) :-
Hence , The value of W is 21 .
Answer ( g) :-
Hence, The value of x is 72 .