3/4 = 6/r

Solution

\frac{3}{4} = \frac{6}{r}

r = 8

Solution steps

\frac{3}{4} = \frac{6}{r}

Cross multiply

3 r = 24

Divide both sides by

3

r = 8

Verify Solutions

Find undefined (singularity) points:

r = 0

Combine undefined points with solutions:

r = 8

172 (\frac{60}{m}) = 80

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

\frac{1}{5 ( k - 3 )} = \frac{3}{4}

\frac{r}{3 r} = 12

\frac{1}{2 x} = \frac{4}{3}