damedi07 wrote:hopefully someone here can explain to me how to solve the equation. the question was:
2/x - c = 2/k
solve for x.
When you have an equation with more than one variable (or "literal") and you're supposed to solve for one of the variables, this is called "solving a literal equation". This site has a lesson on this here
. First, though, you do need to be able to solve one-variable equations, because the lessons expects you to know how to do those methods; to brush up, go here
. A good first step for your equation (there are different ways to get to the answer) could be to get the x-term by itself by adding the c to the other side: 2/x = c + 2/k. Then multiply both sides by x; this cancels it off on the left side: 2 = x(c + 2/k). Then divide off the non-x stuff to get x by itself: 2/(c + 2/k) = x. They might want you to simplify this, too; it's called a "complex" fraction, and there's a lesson on that here