simplify: 2+3*10/5*3-9= A.-5, B.21, C.-60, D.11 , 2+18-9= 20-9=11 so 11 is right i don't got it can you explain more thanx.

In the website Writeacher posted, the first thing you do with this problem is to multiply.

3 * 2 * 3 = 18

Then add and subtract.

18 + 2 - 9 = 11