\(=\dfrac{1}{6}+\dfrac{5}{6}\cdot\dfrac{3-8}{12}\cdot9+\dfrac{9}{20}\)
\(=\dfrac{1}{6}-\dfrac{25}{72}\cdot9+\dfrac{9}{20}=\dfrac{1}{6}-\dfrac{25}{8}+\dfrac{9}{20}=-\dfrac{301}{120}\)
D) = 1.(3/12-8/12).-6/1 + 9/20
=1.(-5).-6/1+9/20
=(-5). 6/1 + 9/20
= -30/1 + 9/20
= 609/200
