So the nth for the sequence 2,5,8, 11, ... is 3 x n-1 or 3n - 1. In this example, the rule 3n - 1 is what we call expression. While 3n - 1 =4 is what we call equation. Let's take a look at this table: EXPRESSION EQUATION 2+5 2+5=7 2Y - 4 2y - 4 = 14 14-3 14-3= 11 5n+6 5 + 6 = 26 10 = 2 10- 2 = 5 In the table, the given in the first column are examples of expression whilke​