Solve 2/15-3/10=

$$\frac { 2 } { 15 } - \frac { 3 } { 10 } =$$

Evaluate

$$-\frac{1}{6}\approx -0.166666667$$

Solution Steps

Least common multiple of 15 and 10 is 30. Convert \frac{2}{15} and \frac{3}{10} to fractions with denominator 30.

$$\frac{4}{30}-\frac{9}{30}$$

Since \frac{4}{30} and \frac{9}{30} have the same denominator, subtract them by subtracting their numerators.

$$\frac{4-9}{30}$$

Subtract 9 from 4 to get -5.

$$\frac{-5}{30}$$

Reduce the fraction \frac{-5}{30} to lowest terms by extracting and canceling out 5.

$$-\frac{1}{6}$$

Factor

$$-\frac{1}{6} = -0.16666666666666666$$