What is the answer to (90)/x = 15/85 ?

The answer to (90)/x = 15/85 is x=510

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(90)/x = 15/85

\frac{90}{x} = \frac{15}{85}

x = 510

Solution steps

\frac{90}{x} = \frac{15}{85}

Cross multiply

7650 = x \cdot 15

Switch sides

x \cdot 15 = 7650

Divide both sides by

15

x = 510

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 510

\frac{x}{2 x - 3} = \frac{4}{x}

\frac{3}{x} + \frac{x}{5} = - 2

\frac{1}{1 + \frac{1}{x}} = 16

x + \frac{2}{x - 4} = \frac{7}{x - 4}

\frac{4}{x - 2} - \frac{15}{x} = 2