00:01
So in this problem, we're being asked to solve a literal equation, which remember just means rearrange the equation to be the variable they want alone.
00:10
So in this particular problem, to explain, we have x equals negative b over 2a.
00:15
And when they say solve for a, that means i want you to make it a equals.
00:21
So manipulate this equation to get that a all by itself.
00:24
So what i'm going to do is i'm going to look at this as a proportion of x over 1 equals negative b over.
00:30
2a and i'm going to cross multiply.
00:33
So i have x times 2a equals 1 times negative b or 2a x equals negative b.
00:46
I need it to be a equals.
00:48
So what i'm going to do is look at this 2ax and i need the a alone...