00:01
So to answer this question, we want to find the least common denominator and make those fractions have that denominator.
00:05
I'm together and we'll get the answer.
00:08
So our least common denominator is going to be the multiple of these two.
00:11
So a plus one times a minus three.
00:13
Now to get this fraction right here to have a denominator of a plus one times a minus three, we multiply by a minus three over a minus three, which is just another form of one.
00:22
And the same goes for here.
00:23
Five over a minus three, we multiply by a plus one over a plus one, which is just another form of one.
00:27
So we can scroll down and to solve that, we get 4 times a minus 3, which is 4 a minus 4 times negative 3, so minus 12, plus 5 times a plus 1.
00:39
So that's 5a plus 5...
