Solve -1/21+-1/14

$$\frac { - 1 } { 21 } + \frac { - 1 } { 14 }$$

Evaluate

$$-\frac{5}{42}\approx -0.119047619$$

Solution Steps

Fraction \frac{-1}{21} can be rewritten as -\frac{1}{21} by extracting the negative sign.

$$-\frac{1}{21}+\frac{-1}{14}$$

Fraction \frac{-1}{14} can be rewritten as -\frac{1}{14} by extracting the negative sign.

$$-\frac{1}{21}-\frac{1}{14}$$

Least common multiple of 21 and 14 is 42. Convert -\frac{1}{21} and \frac{1}{14} to fractions with denominator 42.

$$-\frac{2}{42}-\frac{3}{42}$$

Since -\frac{2}{42} and \frac{3}{42} have the same denominator, subtract them by subtracting their numerators.

$$\frac{-2-3}{42}$$

Subtract 3 from -2 to get -5.

$$-\frac{5}{42}$$

Factor

$$-\frac{5}{42} = -0.11904761904761904$$