What is the answer to 3/(x-4)= 7/x ?

The answer to 3/(x-4)= 7/x is x=7

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3/(x-4)= 7/x

\frac{3}{x - 4} = \frac{7}{x}

x = 7

Solution steps

\frac{3}{x - 4} = \frac{7}{x}

Cross multiply

3 x = 7 x - 28

Move

7 x

to the left side

- 4 x = - 28

Divide both sides by

- 4

x = 7

Verify Solutions

Find undefined (singularity) points:

x = 4, x = 0

Combine undefined points with solutions:

x = 7

\frac{5}{y} = \frac{1}{2}

x, y (\frac{1}{x} + 2) = 3

\frac{2}{x + 7} = \frac{3}{x + 4}

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

v, ka = \frac{w}{v}