another one according to
http://www.kwiznet.com/p/takeQuiz.php?ChapterID=2393&CurriculumID=40&Num=4.21
Method 2: B O D M A S
The letters in the word BODMAS stand for various operations.
B - Stands for Bracket.
O - Stands for "OF" or "Orders" (ie Powers and Square Roots, etc.)
D - Stands for Division.
M - Stands for Multiplication.
A - Stands for Addition.
S - Stands for Subtraction
* Example 1:
40 - 2(2+3)
Correct : 40 - 2(5) = 40 - 10 = 30
Incorrect: 40 - 2(5) = 38(5) = 190
When there are two or more parenthesis, grouping symbols, you perform the inner most grouping symbol first.
again the answer is 2