00:01
All right, so solving this expression using my order of operations so that i get the same answer as the correct answer.
00:10
Using order of operations helps everybody make sure that everybody gets the right answer, as long as they are following the order of operations.
00:20
Always starting at parentheses and exponents.
00:24
Multiply and divide are right next to each other because they have to be done, or they are considered the same step.
00:35
Let me erase my little oops, right? they fall under the same step because they are opposites.
00:43
They just have to be performed in order from left to right, just like how we read.
00:48
Same with adding and subtracting.
00:51
If you have adding and subtracting in the same expression, it needs to be done in order from left to right.
00:57
So looking at my expression, i do see that i do have some parentheses, and that's the first thing that i'm going to do because that's what the order of operations tells me to do.
01:06
So the first thing i'm going to do is 2 minus 9.
01:09
I'm going to rewrite everything exactly the way that it is.
01:13
I'm not going to change anything else.
01:15
I'm even going to keep those parentheses.
01:17
So 2 minus 9 is going to give you 7, negative 7.
01:24
And the reason i kept those parentheses is because if i left them, it's going to look like 3 minus negative 7, and that's not what i want to portray.
01:32
All right, i'm going to keep that negative 7 in parentheses.
01:37
I am done with parentheses because there is nothing else but one number in those parentheses...