Solve A/B=21

$$\frac { A } { B } = 21$$

Solve for B

$$B=\frac{A}{21}$$

$$A\neq 0$$

Steps for Solving Linear Equation

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

$$A=21B$$

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

$$21B=A$$

Divide both sides by 21.

$$\frac{21B}{21}=\frac{A}{21}$$

Dividing by 21 undoes the multiplication by 21.

$$B=\frac{A}{21}$$

Variable B cannot be equal to 0.

$$B=\frac{A}{21}\text{, }B\neq 0$$

Solve for A

$$A=21B$$

$$B\neq 0$$

Solution Steps

Multiply both sides of the equation by B.

$$A=21B$$