What is the answer to 7/5 = 5/x ?

The answer to 7/5 = 5/x is x= 25/7

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7/5 = 5/x

\frac{7}{5} = \frac{5}{x}

x = \frac{25}{7}

Decimal Notation

x = 3.57142 \dots

Solution steps

\frac{7}{5} = \frac{5}{x}

Cross multiply

7 x = 25

Divide both sides by

7

x = \frac{25}{7}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{25}{7}

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

\frac{y}{y + 6} = \frac{4}{5}

70 - x + x (\frac{40}{x} + 1)^{2} = 145

\frac{18}{27} = \frac{8}{x}

4 + \frac{5}{3 x} = - 1