9=-6/v

Solution

9 = - \frac{6}{v}

v = - \frac{2}{3}

Solution steps

9 = - \frac{6}{v}

Multiply both sides by

v

9 v = - 6

Divide both sides by

9

v = - \frac{2}{3}

Verify Solutions

Find undefined (singularity) points:

v = 0

Combine undefined points with solutions:

v = - \frac{2}{3}

\frac{2 x}{21} = \frac{40}{11 x + 4}

\frac{2.2046}{10} = \frac{1}{x}

\frac{1}{x ^{2}} + \frac{1}{x} = 6

x + 3 = \frac{4 x + 8}{x + 3}

\frac{4}{x} = \frac{7.5}{95}