What is the answer to 2/7 = 8/x ?

The answer to 2/7 = 8/x is x=28

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2/7 = 8/x

\frac{2}{7} = \frac{8}{x}

x = 28

Solution steps

\frac{2}{7} = \frac{8}{x}

Cross multiply

2 x = 56

Divide both sides by

2

x = 28

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 28

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

\frac{9}{18} = \frac{13.5}{x}

20 = \frac{x ^{2}}{15 - x}

\frac{- 7}{3 x} = 6

\frac{30}{2000 + x} = \frac{x}{60}