What is the answer to 1/x-3/(7x)= 8/21 ?

The answer to 1/x-3/(7x)= 8/21 is x= 3/2

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1/x-3/(7x)= 8/21

\frac{1}{x} - \frac{3}{7 x} = \frac{8}{21}

x = \frac{3}{2}

Decimal Notation

x = 1.5

Solution steps

\frac{1}{x} - \frac{3}{7 x} = \frac{8}{21}

Multiply by LCM

12 = 8 x

Switch sides

8 x = 12

Divide both sides by

8

x = \frac{3}{2}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{3}{2}

\frac{k}{α} \cdot \frac{0.25}{20} = 10

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

\frac{x}{x - 2} + \frac{1}{5} = \frac{2}{x - 2}

g, g^{- 1} (k + 1) = 2 k

\frac{4}{x ^{2}} - \frac{55}{x} = 14

What is the answer to 1/x-3/(7x)= 8/21 ?
The answer to 1/x-3/(7x)= 8/21 is x= 3/2
Solve for x: 1/x-3/(7x)= 8/21
The solution is x= 3/2