Solve +12/90-7/30

$$+ \frac { 12 } { 90 } - \frac { 7 } { 30 }$$

Evaluate

$$-\frac{1}{10}=-0.1$$

Solution Steps

Reduce the fraction \frac{12}{90} to lowest terms by extracting and canceling out 6.

$$\frac{2}{15}-\frac{7}{30}$$

Least common multiple of 15 and 30 is 30. Convert \frac{2}{15} and \frac{7}{30} to fractions with denominator 30.

$$\frac{4}{30}-\frac{7}{30}$$

Since \frac{4}{30} and \frac{7}{30} have the same denominator, subtract them by subtracting their numerators.

$$\frac{4-7}{30}$$

Subtract 7 from 4 to get -3.

$$\frac{-3}{30}$$

Reduce the fraction \frac{-3}{30} to lowest terms by extracting and canceling out 3.

$$-\frac{1}{10}$$

Factor

$$-\frac{1}{10} = -0.1$$