6/9 = 4/x

Solution

\frac{6}{9} = \frac{4}{x}

x = 6

Solution steps

\frac{6}{9} = \frac{4}{x}

Cross multiply

6 x = 36

Divide both sides by

6

x = 6

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 6

5 + \frac{19}{z} = \frac{4}{z ^{2}}

\frac{( 7.6 - 2 x ) ^{2}}{x} = 0.722

\frac{3 + x}{5 + x} = \frac{9}{10}

\frac{x}{x - 3} = - 1.5

\frac{1}{x} = 0.0625