00:01
For this problem, we're asked to find the solution or find what x and the y is from this really complicated looking system of equations.
00:12
So to solve this, it's actually easier to solidize the elimination method.
00:19
And i noticed that for the second equation, l has a b.
00:22
So therefore, from the first equation, i'm going to multiply everything by b.
00:28
So therefore, this will give me b times ax will give me abx, and b times b -y will give me positive b -square -y.
00:41
And that's going to equal to, and make sure you distribute the b to a and b right here, so that gives me a -b plus b -square.
00:51
So now i'm going to look at these two equations.
00:55
And i notice that there's a negative b -square -y and b -square -y.
00:59
So when i add them together, that cancels out.
01:04
So this cancels out.
01:05
So therefore, i have 2 abx equals to.
01:11
And when i add the negative ab plus ab, that also cancels out...