Va roog, am nevoie extrem de urgent ,dau coroană

Răspuns:
{9×[0,5+0,2×(3,5+6÷4)]+8}×6=
{9×[0,5+0,2×(3,5+1,5)]+8}×6=
[9×(0,5+0,2×5)+8]×6=
[9×(0,5+1)+8]×6=
(9×1,5+8)×6=
(13,5+8)×6=
21,5×6=129