I need help with these electrical formulas?

Question

E=P/I solve for I
E=IR solve for R
R=KL/A solve for L
G=1/R solve for R
Rs=ImxRm/Is solve for Rm
XL=2piefl solve for f

Answer 1

Basic math/algebra. You are taking two known numbers and finding the unknown number.
E=P/I solve for I Think like simple Algebra I is X. So you want to work the problem and get a final answer x=? or I=?
Hope this helps.

Answer 2

I=p/E
R=E/I
L=AR/K
R=1/G

You can do the rest, you should have the idea by now.