Explicación paso a paso:
3/5+(1/3*5/2)-(1/3:+/5)=3/5+(5*1/3*2)-(1*5/3*4)=3/5+(5/6)-(5/12)=3/5+5/6-5/12=
mcm (5,6,12)=4*5*3=60
5=5*1
6=2*3*1
12=2^2*3*1
3/5+5/6+5/12=3*12/60+5*10/60-5*5/60=36/60+50/60-25/60=86-25/60=61/60