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

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(i) - -

=

=

(ii) - - -

= - -

=

=

(iii) + + - -

= -

= -

=

=

(iv) + - - +

= - +

= - +

=

=

(v) + + -

= +

= -

=

=

=

(vi) + + + + -

= + + -

=

=