Solve 7/26-1/39=

$$\frac { 7 } { 26 } - \frac { 1 } { 39 } =$$

Evaluate

$$\frac{19}{78}\approx 0.243589744$$

Solution Steps

Least common multiple of 26 and 39 is 78. Convert \frac{7}{26} and \frac{1}{39} to fractions with denominator 78.

$$\frac{21}{78}-\frac{2}{78}$$

Since \frac{21}{78} and \frac{2}{78} have the same denominator, subtract them by subtracting their numerators.

$$\frac{21-2}{78}$$

Subtract 2 from 21 to get 19.

$$\frac{19}{78}$$

Factor

$$\frac{19}{2 \cdot 3 \cdot 13} = 0.24358974358974358$$