15c SOLVE question on usage

[lemontea]

Hello everyone!

I have a 15c (the LE reissued one; woot!).

I have a newbie question on SOLVE (yes, I have not used this function in all these decades).

User guides talk about solving for roots, but that's not what I want to do.

Can I enter an equation, say Ohm's Law, and have it solve for the 3rd unknown, if I have 2 of the 3 variables?

As you know, Ohm's Law is

E = I * R

where E = voltage, I = current in amps, R = resistance in ohms

So, can I write an equation in programming, such as

(I* R) - E = 0

(or however one should program it in)

and use SOLVE to find the unknown?

If so how?

Thanks!