<PRE><B>Question 191559</B>
(1/3)  *  (3/4)   + (-2/5)  (2)

(3 /12)    +  (-  4/5)

reducing

1/4  -  4/5

LCD  is  20


5/20  -  (4 * 4)  / 20

5/20 - 16 / 20

( -11 /20)</PRE>