Răspuns :
nu stiu daca e tocmai corect, sper ca nu am gresit la calcule:))
{10+2x[10+2×(150-135)]}×5-23
{10+2×[10+2×15]}×5-23
[10+2×(10+30)]×5-23
(10+2×40)×5-23
(10+80)×5-23
90×5-23
450-23
427