00:01
So i'm going to use substitution for this one, and i am going to solve for y.
00:07
So in that first equation, if i solve for y, that would give me a negative x minus 1.
00:16
I'm going to put that into the second equation.
00:19
So i have x squared plus negative x minus 1 times negative x minus 1, plus negative x minus 1, plus negative x minus 1, plus negative x minus 1, plus, minus 1, plus, 6 times negative x minus 1 minus x equals 5.
00:50
So let's go through and multiply these.
00:52
So i've got x squared plus negative x times the negative x is going to be x squared plus.
01:03
So this would be x and this would be x.
01:07
So i'd have 2x plus 1.
01:12
I would be adding negative 6x minus 6x equals 5.
01:25
So it's combined like terms.
01:27
I see with this one and this one i get 2x squared.
01:31
And my x terms, this would be a negative 7x plus 2 gives me negative 5x, and then minus 5 equals 5.
01:52
So then if i do this, we'd have 2x squared...