(i) We have,

+ - = (L.C.M of 2, 4 and 4 is 4)

=

=

=

= -2

(ii) We have,

- - = (L.C.M of 3, 6 and 3 is 6)

=

=

(iii) We have,

- + = (L.C.M of 4, 6 and 3 is 24)

=

=

=

=

(iv) We have,

+ + = (L.C.M of 5, 10 and 7 is 70)

=

=

=

(v) We have,

- + = (L.C.M of 6, 5 and 15 is 30)

=

=

=

(vi) We have,

+ - = (L.C.M of 8, 9 and 36 is 72)

=

=

=

=