Final answer:
The sentence 'The difference of a number n and 1.8 is 2' translates to the equation n - 1.8 = 2, representing a subtraction operation with the result equal to 2.
Step-by-step explanation:
The student has asked for an equation to represent a given sentence. The sentence is: "The difference of a number n and 1.8 is 2." To translate this sentence into a mathematical equation, you identify the keywords and their corresponding mathematical symbols.
The keyword 'difference' indicates subtraction, so you need an equation that involves subtracting 1.8 from a number, which we call n. The phrase 'is 2' tells us that the result of this subtraction is equal to 2. Therefore, the equation is: n - 1.8 = 2.