(Adding or Subtracting Like Fractions).
... To add or subtract fractions that have unlike, or different, denominators, we write the fractions as equivalent fractions with a common denominator. The smallest common denominator is called the least common denominator (LCD). Definition 3. The least common denominator (LCD) of a list of fractions i ...
... To add or subtract fractions that have unlike, or different, denominators, we write the fractions as equivalent fractions with a common denominator. The smallest common denominator is called the least common denominator (LCD). Definition 3. The least common denominator (LCD) of a list of fractions i ...
20 Triangles.
... The total number of triangles is the sum of the first n-2 triangular numbers. The nth triangular number is n 2 n 1 ...
... The total number of triangles is the sum of the first n-2 triangular numbers. The nth triangular number is n 2 n 1 ...
