1/5+(-3/2)*(-4/9)=1/2+(-3/2)*(-4/9)
1/5+(-3/2(*(-4/9)-1/2+(-3/2)*(-4/9)=0
(1/5+((0-3/2)*(0-4/9)))-(1/2+((0-3/2)*(0-4/9)))=0
(1/5+((0-3/2)*(0-4/9)))-(1/2+((0-3/2)*-4/9))=0
1/5+((0-3/2)*(8-4/9)))-(1/2+2/3)=0
3+2*2/6=7/6
(1/5+((0-3/2)*(0-4/9)))-7/6=0
(1/5+((0-3/2)*-4/9))-7/6=0
(1/5+2/3)-7/6
3+2*5/15=13/15
13/15-7/6=0
13*2-(7/5)/30= -3/10
-3/10=0
-3/10*10=0*10
-3=0