{100-[3x(11-7)+2+5(-10)/3(6-2)]}
{100-[3x(11-7)+2+5(-10)/3(6-2)]}
=100-[3x(4) + 2 - 50/3(4)]
=100-[12x + 2 - 200/3]
= 100 - 12x - 2 + 200/3
=98 - 12x + 200/3
= 494/3 - 12x
I did this question following the order of operation the way you typed it