12 × (6 + 3 )
note that the area of the figure = 12 × 9 = 108 ( length × width )
and 9 = (6 + 3 ) ← the width
replacing 9 by (6 + 3) area = 12(6 + 3) = 72 + 36 = 108 ( distributing )
6.6m questions
8.8m answers