What is the answer to 7/x = 4/9 ?

The answer to 7/x = 4/9 is x= 63/4

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7/x = 4/9

\frac{7}{x} = \frac{4}{9}

x = \frac{63}{4}

Solution steps

\frac{7}{x} = \frac{4}{9}

Cross multiply

63 = x \cdot 4

Switch sides

x \cdot 4 = 63

Divide both sides by

4

x = \frac{63}{4}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{63}{4}

\frac{3}{x ^{5}} = 27

x, y - \frac{1}{x ^{2}} = 0

\frac{x + 4}{2} = \frac{6}{x}

\frac{4}{10.5} = \frac{8}{x}

\frac{2 x}{x + 2} = 9 - \frac{4}{x + 2}