Solve =1/-20+1/-60

$$= \frac { 1 } { - 20 } + \frac { 1 } { - 60 }$$

Evaluate

$$-\frac{1}{15}\approx -0.066666667$$

Solution Steps

Fraction \frac{1}{-20} can be rewritten as -\frac{1}{20} by extracting the negative sign.

$$-\frac{1}{20}+\frac{1}{-60}$$

Fraction \frac{1}{-60} can be rewritten as -\frac{1}{60} by extracting the negative sign.

$$-\frac{1}{20}-\frac{1}{60}$$

Least common multiple of 20 and 60 is 60. Convert -\frac{1}{20} and \frac{1}{60} to fractions with denominator 60.

$$-\frac{3}{60}-\frac{1}{60}$$

Since -\frac{3}{60} and \frac{1}{60} have the same denominator, subtract them by subtracting their numerators.

$$\frac{-3-1}{60}$$

Subtract 1 from -3 to get -4.

$$\frac{-4}{60}$$

Reduce the fraction \frac{-4}{60} to lowest terms by extracting and canceling out 4.

$$-\frac{1}{15}$$

Factor

$$-\frac{1}{15} = -0.06666666666666667$$