What is the answer to 2+7/c = 2/5 ?

The answer to 2+7/c = 2/5 is c=-35/8

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2+7/c = 2/5

2 + \frac{7}{c} = \frac{2}{5}

c = - \frac{35}{8}

Decimal Notation

c = - 4.375

Solution steps

2 + \frac{7}{c} = \frac{2}{5}

Multiply by LCM

10 c + 35 = 2 c

Move

35

to the right side

10 c = 2 c - 35

Move

2 c

to the left side

8 c = - 35

Divide both sides by

8

c = - \frac{35}{8}

Verify Solutions

Find undefined (singularity) points:

c = 0

Combine undefined points with solutions:

c = - \frac{35}{8}

\frac{3}{y} - 5 = \frac{20}{2 y}

\frac{2}{4} = \frac{4}{x}

\frac{x}{1 + x ^{2}} = - 0.6289024

d, F = \frac{k QC}{d}

\frac{5}{12} = \frac{3}{x ^{2}}