Question 17668: 21 X 2 - 54 / 9
The agruement is the order in which the expression is calculated.
Answer by mmm4444bot(95)   (Show Source):
You can put this solution on YOUR website! Hello There:
I'm going to assume that the letter 'X' means multiplication instead of representing a variable. In the future, you should consider using an asterisk to denote multiplication, since the letter x is used almost exclusively as a variable.
Having said this, I will retype your expression:
21 * 2 - 54 / 9
The order of operations tells us to do multiplication and division before doing addition and subtraction.
So, working from left to right, we first need to do 21 * 2 and 54 / 9.
21 * 2 = 42
54 / 9 = 6
Substituting these values into your expression leads to:
42 - 6
So, the final result is 36.
~ Mark
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