00:01
Ok, so we want to solve this system of equations by elimination here.
00:04
The way it's set up, we are going to have to adjust at least one of the equations to make it so that it eliminates.
00:11
For example, because we have a positive 1x and a positive 1x between the two of them, we want one of them to be negative.
00:17
I think it's going to be easiest just to take this second equation here and multiply it by a negative 1 for everything.
00:23
And when i say everything, i mean we have to distribute the negative 1 to every single value.
00:27
When i do that, my new equations are are going to be x plus y equals negative 2, negative x plus 4y equals a negative 3.
00:36
From here, i can go ahead and now combine everything vertically.
00:40
So x minus x will cancel each other out.
00:42
I have 0x here plus 5y is equal to a negative 5...