00:01
Hello, hope you're doing well.
00:02
So we've got our system of equations here.
00:04
And we're going to solve this system using the addition method.
00:07
So we've got all our terms lined up.
00:10
So in order to eliminate one of our variables, we're going to eliminate a y variable.
00:15
And to do that, we're going to multiply this first equation by minus 1.
00:19
So distributing this minus 1, we've got minus 1 times x is minus x.
00:24
Minus 1 times y is minus y, that's equal to minus 1 times 4, which is minus 4.
00:31
We're going to rewrite our second equation down here again.
00:36
When we add these two equations together, over here we've got minus y plus y, which just goes to 0.
00:42
So the y variable is eliminated.
00:44
We've got minus x plus 2x, which is x...