repede varog am nevoie in 10 minute

Răspuns:
7•{8+9•[0,5+0,2•(3,5+6:4)]}=
=7•{8+9•[0,5+0,2•(3,5+1,5)]}=
=7•{8+9•[0,5+0,2•5]}=
=7•{8+9•[0,5+1]}=
=7•{8+9•1,5}=
=7•{8+13,5}=
=7•21,5=
=150,5
coroana!!!