Question

IR + Ir = E solve for I

Answer 1

\[I(R+r)=E\\I=\frac{E}{R+r}\]

Answer 2

how did you get the I by itself such as in I(R+r)

Answer 3

Okay, see IR and Ir both has an I...

Answer 4

yes

Answer 5

Since they both have one, you can "group like terms" and get
I(R+r)


To test:


See, we get IR+Ir when we multiply it back, so it is correct