Re-arrange sutably and find the sum in each of the following.

(i)


(ii)


(iii)


(iv)


(v)


(vi)

(i) - -

=


=


(ii) - - -


= - -


=


=


(iii) + + - -


= -


= -


=


=


(iv) + - - +


= - +


= - +


=


=


(v) + + -


= +


= -


=


=


=


(vi) + + + + -


= + + -


=


=


6