Question

Calculati:
(6/10+1/2) × 5 +1/2 : (2/5 - 1/10) +2

Answer 1

=[(6+5)/10]x5+1/2:(2x2-1)/10+2=
=11/10x5/1+1/2:3/10+2=
=55/10+1/2x10/3+2=
=55/10+10/6+2=
=(55x6+10x10+2x60)/60=
=(330+100+120)/60=550/60=55/6=9,1(6)