1) (3 3/5-2 1/15)*5=(18/5-31/15)*5=(54/15-31/15)*5=23/15*5=23/3 2) (1 1/14-1 1/34)*34=(2/14-2/34)*34=(1/7-1/17)*34=34/7-34/17=34/7-2=4 6/34-2=2 6/34= 3/17