Question

Simplify each of the following and express the result as a rational number in standard form:

(i) (-16/21) × (14/5)

(ii) (7/6) × (-3/28)

(iii) (-19/36) × 16

(iv) (-13/9) × (27/-26)

Answer 1

(i) Given (-16/21) × (14/5)

(-16/21) × (14/5) 

= (224/105)

= (-32/15)

(ii) Given (7/6) × (-3/28)

(7/6) × (-3/28) 

= (-21/168)

= (-1/8)

(iii) Given (-19/36) × 16

(-19/36) × 16 

= (-304/36)

= (-76/9)

(iv) Given (-13/9) × (27/-26)

(-13/9) × (27/-26) 

= (-351/234)

= (3/2)