00:01
I think a good idea for the first step of this would be to rewrite the equation in a different form to show what we're really doing here.
00:08
So for the first fraction, i don't like that negative just sitting out in front of the fraction.
00:13
I like to move that negative to the top because we know that's where we're actually going to be using that negative at, right? we're not going to be using it for the denominator because we want to keep the denominator as easy to change as possible because we know we're going to have to get a common denominator eventually.
00:28
Also, if we are taking negative 3 over 4 minus 5 over 8, that is the same thing as taking negative 3 over 4 plus negative 5 over 8.
00:41
Right? same way that when we said like if you have 2 minus 3, that's the same as 2 plus a negative 3, right? it's the same idea as that.
00:49
That's what we're doing here.
00:51
So i would prefer to rewrite it that way.
00:54
Not necessarily that you have to, but i think it is more clear what we're doing that.
00:57
Way.
00:59
Now besides that, before we can combine these fractions we do need to come up with a common denominator.
01:04
Sometimes we have to multiply both denominators by something...