Solve 7/9-4/8

$$\frac { 7 } { 9 } - \frac { 4 } { 8 }$$

Evaluate

$$\frac{5}{18}\approx 0.277777778$$

Solution Steps

Reduce the fraction \frac{4}{8} to lowest terms by extracting and canceling out 4.

$$\frac{7}{9}-\frac{1}{2}$$

Least common multiple of 9 and 2 is 18. Convert \frac{7}{9} and \frac{1}{2} to fractions with denominator 18.

$$\frac{14}{18}-\frac{9}{18}$$

Since \frac{14}{18} and \frac{9}{18} have the same denominator, subtract them by subtracting their numerators.

$$\frac{14-9}{18}$$

Subtract 9 from 14 to get 5.

$$\frac{5}{18}$$

Factor

$$\frac{5}{2 \cdot 3 ^ {2}} = 0.2777777777777778$$