solve for new variable within formula

[proctk]

Hi,

I am struggling to figure out how to reorder the below formula to solve for the variable "currentRate". I've watched lots of youtube videos but nothing is leading me to the solution. It's been many years since I've used algebra. I get the basics, but the double brackets are mixing me up. Thank you for any help.

IRD = (currentRate - (IRDComparisonRate - discount)) * mtgBalance * mthsToMaturity/12

 

[Steven G]

Let's use simpliar variables
A = (B-(C-D))*E*F/12, Solve for B
So 12A=(B-(C-D))*E*F

Then 12A/(E*F) = B-(C-D)

Can you continue from here?