Problem 2.1: Reduce 45/18 to lowest terms. [Solution]

Problem 2.2: Reduce 7/49 to lowest terms. [Solution]

Problem 2.3: Reduce 30/105 to lowest terms. [Solution]

Problem 2.4: What is the least common denominator of 6/11 and 9/2? [Solution]

Problem 2.5: What is the least common denominator of 7/16 and 1/6? [Solution]

Problem 2.6: What is the least common denominator of 2/9 and 4/27? [Solution]