1/2 = 3/x

Solution

\frac{1}{2} = \frac{3}{x}

x = 6

Solution steps

\frac{1}{2} = \frac{3}{x}

Cross multiply

x = 6

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 6

\frac{2}{x} = 8

\frac{r + 4.6}{r - 2.3} = 3.3

\frac{7}{k - 2} = \frac{5}{8}

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

\frac{24}{s} = \frac{4}{12}