What is the answer to 0.4= 1/x ?

The answer to 0.4= 1/x is x=2.5

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0.4= 1/x

0.4 = \frac{1}{x}

x = 2.5

Solution steps

0.4 = \frac{1}{x}

Multiply both sides by

x

0.4 x = 1

Divide both sides by

0.4

x = 2.5

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 2.5

- \frac{5}{2} = \frac{x + 3}{x - 3}

0 = \frac{x ^{2} - 4}{x ^{4} + 1}

\frac{7}{x - 6} = 19

2 π = \frac{2 π}{b}

\frac{2 x}{x - 3} = \frac{x + 1}{x + 3}