00:01
We need to solve the following system.
00:02
So we're going to get rid of our fraction.
00:04
So our first equation, we're going to multiply everything by 2.
00:07
And our second equation, we're going to multiply everything bar 2.
00:09
So our first equation becomes x minus 2y is equal to 10.
00:14
Our second equation becomes 2x minus y is equal to 8.
00:19
So we're going to multiply our second equation again by another 2.
00:23
And it's going to be a negative 2 so we can cancel out our y's.
00:26
So our first equation stayed x minus 2y is equal to 10.
00:30
Our second equation becomes negative 4x plus 2y is equal to negative 16.
00:37
Our y is cancel out and we're left with negative 3x...