2/3 = 6/x

Solution

\frac{2}{3} = \frac{6}{x}

x = 9

Solution steps

\frac{2}{3} = \frac{6}{x}

Cross multiply

2 x = 18

Divide both sides by

2

x = 9

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 9

\frac{x - 2}{x + 1} = 0

\frac{18 x ^{2}}{x ^{4} + 81} = 1

x^{- 3} = \frac{1}{27}

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

7 - \frac{2}{x - 4} = 5