Solve D=M*t*d

$$D = M \cdot t \cdot d$$

Solve for M

$$\left\{\begin{matrix}M=\frac{D}{dt}\text{, }&d\neq 0\text{ and }t\neq 0\\M\in \mathrm{R}\text{, }&\left(d=0\text{ or }t=0\right)\text{ and }D=0\end{matrix}\right.$$

Steps for Solving Linear Equation

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

$$Mtd=D$$

The equation is in standard form.

$$dtM=D$$

Divide both sides by td.

$$\frac{dtM}{dt}=\frac{D}{dt}$$

Dividing by td undoes the multiplication by td.

$$M=\frac{D}{dt}$$

Solve for D

$$D=Mdt$$