Solve 25/28-18/35

$$\frac { 25 } { 28 } - \frac { 18 } { 35 }$$

Evaluate

$$\frac{53}{140}\approx 0.378571429$$

Solution Steps

Least common multiple of 28 and 35 is 140. Convert \frac{25}{28} and \frac{18}{35} to fractions with denominator 140.

$$\frac{125}{140}-\frac{72}{140}$$

Since \frac{125}{140} and \frac{72}{140} have the same denominator, subtract them by subtracting their numerators.

$$\frac{125-72}{140}$$

Subtract 72 from 125 to get 53.

$$\frac{53}{140}$$

Factor

$$\frac{53}{2 ^ {2} \cdot 5 \cdot 7} = 0.37857142857142856$$