Question 180(iv)
Simplify
(15)45×(15)−60−(15)28×(15)−43
(15)45×(15)−60−(15)28×(15)43=(15)45+(−60)−(15)28+(−43)
=(15)45−60− (15)28−43
=(15)−15− (15)−15
=0