What is the answer to 1/x+3/x =12 ?

The answer to 1/x+3/x =12 is x= 1/3

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1/x+3/x =12

\frac{1}{x} + \frac{3}{x} = 12

x = \frac{1}{3}

Decimal Notation

x = 0.33333 \dots

Solution steps

\frac{1}{x} + \frac{3}{x} = 12

Multiply both sides by

x

4 = 12 x

Switch sides

12 x = 4

Divide both sides by

12

x = \frac{1}{3}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{1}{3}

94.11 = \frac{1015}{x}

60 = \frac{( 0.2 x ^{2} + 4 x + 15 )}{x}

\frac{5}{2 x} + \frac{9}{2} = 5

t, a = \frac{b}{t}

x, \frac{y}{x} + a = b