What is the answer to 3/5 = n/(2n-4) ?

The answer to 3/5 = n/(2n-4) is n=12

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3/5 = n/(2n-4)

\frac{3}{5} = \frac{n}{2 n - 4}

n = 12

Solution steps

\frac{3}{5} = \frac{n}{2 n - 4}

Cross multiply

6 n - 12 = 5 n

Move

12

to the right side

6 n = 5 n + 12

Move

5 n

to the left side

n = 12

Verify Solutions

Find undefined (singularity) points:

n = 2

Combine undefined points with solutions:

n = 12

\frac{2 x - 1}{1 - x} = 0

\frac{3 a}{x} + 8 = \frac{3 b}{x} + 3

\frac{2 x ^{3} - 32 x}{x - 4} = 20 x

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

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