What is the answer to 9/4 =(r-10)/r ?

The answer to 9/4 =(r-10)/r is r=-8

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9/4 =(r-10)/r

\frac{9}{4} = \frac{r - 10}{r}

r = - 8

Solution steps

\frac{9}{4} = \frac{r - 10}{r}

Cross multiply

9 r = 4 r - 40

Move

4 r

to the left side

5 r = - 40

Divide both sides by

5

r = - 8

Verify Solutions

Find undefined (singularity) points:

r = 0

Combine undefined points with solutions:

r = - 8

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

x, c = \frac{y - x}{y + x}

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

\frac{3}{4.5} = \frac{12}{d}

4 = \frac{2 π}{b}