ORDER OF OPERATIONS: Problem 1
 Rule 21:

Expressions in parenthesis are treated as one
number and must be calculate first.
Problem 1: Calculate .
Answer: The answer is 3.

Solution:
 Since there parenthesis in the problem. Work from
left to right. The parenthesis can be simplified to  2.
The problem
can now be written .
The remaining parenthesis
contains multiplication and subtraction. Complete the multiplication
first. can be modified to
.
The problem can now be written as
which in turn can be simplified to 3+(4)+4=3.
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