Solve y=-1/3xD

$$y = - 1 / 3 x D$$

Solve for D

$$\left\{\begin{matrix}D=-\frac{3y}{x}\text{, }&x\neq 0\\D\in \mathrm{R}\text{, }&y=0\text{ and }x=0\end{matrix}\right.$$

Steps for Solving Linear Equation

Swap sides so that all variable terms are on the left hand side.

$$-\frac{1}{3}xD=y$$

The equation is in standard form.

$$\left(-\frac{x}{3}\right)D=y$$

Divide both sides by -\frac{1}{3}x.

$$\frac{\left(-\frac{x}{3}\right)D}{-\frac{x}{3}}=\frac{y}{-\frac{x}{3}}$$

Dividing by -\frac{1}{3}x undoes the multiplication by -\frac{1}{3}x.

$$D=\frac{y}{-\frac{x}{3}}$$

Divide y by -\frac{1}{3}x.

$$D=-\frac{3y}{x}$$

Solve for x

$$\left\{\begin{matrix}x=-\frac{3y}{D}\text{, }&D\neq 0\\x\in \mathrm{R}\text{, }&y=0\text{ and }D=0\end{matrix}\right.$$

Steps for Solving Linear Equation

Swap sides so that all variable terms are on the left hand side.

$$-\frac{1}{3}xD=y$$

The equation is in standard form.

$$\left(-\frac{D}{3}\right)x=y$$

Divide both sides by -\frac{1}{3}D.

$$\frac{\left(-\frac{D}{3}\right)x}{-\frac{D}{3}}=\frac{y}{-\frac{D}{3}}$$

Dividing by -\frac{1}{3}D undoes the multiplication by -\frac{1}{3}D.

$$x=\frac{y}{-\frac{D}{3}}$$

Divide y by -\frac{1}{3}D.

$$x=-\frac{3y}{D}$$