Adding and Subtracting Fractions

Yeah This is how the least common multiple's found Write a list of each denominator's multiples down The smallest number you can find in both of them Is the least common multiple, a.k.a. the LCM The least common multiple can also be Called the least common denominator, or LCD It stays the same in the difference of the sum When you subtract or add two fractions Three-sixths of a pizza minus one-fourth Find the LCM, which is twelve, of course Twelve is the least common denominator Make equivalent fractions Six-twelfths and three-twelfths Then do the subtraction Six minus three is three Three-twelfths of a pizza at the pizzeria Find the least common multiple, that's the first action Next is finding equivalent fractions Then do the addition or subtraction Simplify like an automatic reaction Two-fourths of a pizza plus one-fifth It smells so good, we had to give it a sniff The LCM was twenty, the new denominator We found equivalence quickly Ten-twentieths plus four-twentieths Fourteen-twentieths of a pizza at the pizzeria Find the least common multiple, that's the first action Next is finding equivalent fractions Then do the addition or subtraction Simplify like an automatic reaction Five-sixths of a pizza minus one-third I knew the LCM was six, and have you heard It's also called the least common denominator I found equivalent fractions Five-sixths and two-sixths Then I did the subtraction Five minus two is three Three-sixths of a pizza at the pizzeria Find the least common multiple, that's the first action Next is finding equivalent fractions Then do the addition or subtraction Simplify like an automatic reaction