What is the answer to 4/x = 9/5 ?

The answer to 4/x = 9/5 is x= 20/9

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4/x = 9/5

\frac{4}{x} = \frac{9}{5}

x = \frac{20}{9}

Solution steps

\frac{4}{x} = \frac{9}{5}

Cross multiply

20 = x \cdot 9

Switch sides

x \cdot 9 = 20

Divide both sides by

9

x = \frac{20}{9}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{20}{9}

(A + 20) (\frac{120}{A} - 1) = 120

\frac{15}{x} = 5

x, \frac{k}{x} = v w

\frac{2}{x} = 10

\frac{x + 3}{x - 2} = \frac{8}{3}