Solve 0.57=4/Ar

$$0.57 = \frac { 4 } { A r }$$

Solve for A

$$A=\frac{400}{57r}$$

$$r\neq 0$$

Steps for Solving Linear Equation

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

$$0.57Ar=4$$

Divide both sides by 0.57.

$$Ar=\frac{4}{0.57}$$

Expand \frac{4}{0.57} by multiplying both numerator and the denominator by 100.

$$Ar=\frac{400}{57}$$

The equation is in standard form.

$$rA=\frac{400}{57}$$

Divide both sides by r.

$$\frac{rA}{r}=\frac{\frac{400}{57}}{r}$$

Dividing by r undoes the multiplication by r.

$$A=\frac{\frac{400}{57}}{r}$$

Divide \frac{400}{57} by r.

$$A=\frac{400}{57r}$$

Variable A cannot be equal to 0.

$$A=\frac{400}{57r}\text{, }A\neq 0$$

Solve for r

$$r=\frac{400}{57A}$$

$$A\neq 0$$

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 Ar.

$$0.57Ar=4$$

Divide both sides by 0.57.

$$Ar=\frac{4}{0.57}$$

Expand \frac{4}{0.57} by multiplying both numerator and the denominator by 100.

$$Ar=\frac{400}{57}$$

Divide both sides by A.

$$\frac{Ar}{A}=\frac{\frac{400}{57}}{A}$$

Dividing by A undoes the multiplication by A.

$$r=\frac{\frac{400}{57}}{A}$$

Divide \frac{400}{57} by A.

$$r=\frac{400}{57A}$$

Variable r cannot be equal to 0.

$$r=\frac{400}{57A}\text{, }r\neq 0$$