Multiply and reduce to lowest form (if possible) :

(i) (ii) (iii)

(iv) (v) (vi)

(vii)

_{(i) We have,}

× 2

= ×

=

= 1

(ii) We have,

×

(iii) We have,

×

(iv) We have,

×

=

= 1

(v) We have,

×

=

(vi) We have,

×

=

= 1

(vii) We have,

×

=

= 1