00:01
So here we have the equation 2 .31m equals 2 .455.
00:11
Okay, so to solve for m, we want to undo what's happening to it.
00:15
So currently being multiplied by 2 .31, so we are going to divide by 2 .31 on both sides.
00:22
So these cancel, and we end up with the equation, m equals 2 .45 divided by 2 .351.
00:33
2 .455, yes.
00:42
Okay, i copied it right.
00:44
Okay, so to do this, we're going to use long division to solve for this.
00:49
You could also use a calculator or whatever method you like to use to divide.
00:54
So to do this, i'm going to actually rewrite this another way.
00:59
4255 divided by 2 .31.
01:01
By multiplying this whole thing by 100 over 100, that's the same as multiplying by 1.
01:08
So i'm not actually changing the value or the ratio between the numbers.
01:11
But what that does is it makes my long division easier.
01:14
It gives me 242 .55 divided by 231.
01:20
Okay.
01:24
42, that would help me.
01:26
If i had the right numbers in there, divide by 231.
01:32
So we know it goes in once to 242, and that was 231.
01:40
And here i can subtract, so i have 2 minus 1 is 1, 4 minus 3 is 1.
01:45
231 does not go into 11 at all.
01:50
It does not go into 115 at all, but it does go into 1 ,155.
01:59
So let's see how many times it does that.
02:02
If i think about this as being about 200, going into about 1200, i could estimate that's about 6 times.
02:16
So let's see, 231 times 6.
02:19
That will give me 6, 18, 13...