4/k = 8/2

Solution

\frac{4}{k} = \frac{8}{2}

k = 1

Solution steps

\frac{4}{k} = \frac{8}{2}

Cross multiply

8 = k \cdot 8

Switch sides

k \cdot 8 = 8

Divide both sides by

8

k = 1

Verify Solutions

Find undefined (singularity) points:

k = 0

Combine undefined points with solutions:

k = 1

\frac{9}{x} = \frac{2}{5}

\frac{1}{x - 3} - 1 = \frac{5}{x - 3}

6^{- 7} = \frac{1}{x}

\frac{5}{6} = \frac{1}{x - 2}

10 = \frac{5}{x}