Solve I=u/R

$$I = \frac { u } { R }$$

Solve for R

$$\left\{\begin{matrix}R=\frac{u}{I}\text{, }&u\neq 0\text{ and }I\neq 0\\R\neq 0\text{, }&I=0\text{ and }u=0\end{matrix}\right.$$

Steps for Solving Linear Equation

Variable R cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by R.

$$IR=u$$

Divide both sides by I.

$$\frac{IR}{I}=\frac{u}{I}$$

Dividing by I undoes the multiplication by I.

$$R=\frac{u}{I}$$

Variable R cannot be equal to 0.

$$R=\frac{u}{I}\text{, }R\neq 0$$

Solve for I

$$I=\frac{u}{R}$$

$$R\neq 0$$