simplify: 2+3*10/5*3-9= A.-5, B.21, C.-60, D.11 (B) is the answer right

and thank you again

Nope.

3 * 2 * 3 = 18

18 + 2 - 9 = ??

Remember PEMDAS:

http://www.mathsisfun.com/operation-order-pemdas.html

When you do the various operations in the correct order (PEMDAS), you'll get the right answer ... providing your math facts are correct!

To simplify the given expression:

1. Follow the order of operations (PEMDAS/BODMAS): Parentheses/Brackets, Exponents/Orders, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

2+3*10/5*3-9

2. Perform multiplication and division from left to right:

2 + 30/5*3 - 9

3. Simplify the multiplication:

2 + 6*3 - 9

4. Perform multiplication:

2 + 18 - 9

5. Perform addition and subtraction from left to right:

20 - 9

6. Perform subtraction:

11

Therefore, the simplified value of the expression is 11, not option B.