In adding and subtracting fractions with unlike denominators, you have to get a least common denominator which is exactly like the least common multiple it just so happens to be in the denominator.

Fractions, often perceived as daunting, become manageable with the right approach. Addition and subtraction require finding a common denominator, while multiplication involves directly multiplying ...

Each fraction has the same denominator. Use the numerators to order the fractions. The smaller the numerator, the smaller the fraction. The numerators are all the same. Use the denominators to order ...