What is the answer to 1/2 = 1/(4+c) ?

The answer to 1/2 = 1/(4+c) is c=-2

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1/2 = 1/(4+c)

\frac{1}{2} = \frac{1}{4 + c}

c = - 2

Solution steps

\frac{1}{2} = \frac{1}{4 + c}

Cross multiply

4 + c = 2

Move

4

to the right side

c = - 2

Verify Solutions

Find undefined (singularity) points:

c = - 4

Combine undefined points with solutions:

c = - 2

\frac{7}{15} = \frac{12}{5 x}

\frac{3}{x} = - 51

y, x = \frac{- 7}{1 + 4 y}

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

\frac{3}{x + 1} - \frac{2}{x - 4} = 0