10x8-16+9+100/2-11+51
according the the BEMDAS rule, multiply and divide goes before add and subtract.
you get 80-16+9+50-11+51.
now only addition and subtraction are left, solve from left to right.
64+9+50-11+51
=73+50-11+51
=123-11+51
=112+51
=163.
B is the correct answer.
