Question

( 1⁄5 - (1⁄2)2 + 3⁄4) : 2⁄6

Answer 1

1/5=0.2
1/2=0.5
3/4=0.75
2/6=
((0.2-0.5)*2+0.75):2/6=
(-0.6+0.75):2/6=
(15/100):2/6=
(3/20)*6/2=9/10
Вроде так.