Solve x*(1-30%)=20

$$x \times ( 1 - 30 \% ) = 20$$

Solve for x

$$x = \frac{200}{7} = 28\frac{4}{7} \approx 28.571428571$$

Steps for Solving Linear Equation

Reduce the fraction \frac{30}{100} to lowest terms by extracting and canceling out 10.

$$x\left(1-\frac{3}{10}\right)=20$$

Convert 1 to fraction \frac{10}{10}.

$$x\left(\frac{10}{10}-\frac{3}{10}\right)=20$$

Since \frac{10}{10} and \frac{3}{10} have the same denominator, subtract them by subtracting their numerators.

$$x\times \frac{10-3}{10}=20$$

Subtract 3 from 10 to get 7.

$$x\times \frac{7}{10}=20$$

Multiply both sides by \frac{10}{7}, the reciprocal of \frac{7}{10}.

$$x=20\times \frac{10}{7}$$

Express 20\times \frac{10}{7} as a single fraction.

$$x=\frac{20\times 10}{7}$$

Multiply 20 and 10 to get 200.

$$x=\frac{200}{7}$$