Question

Which expression best represents the difference between triple a number and double a number?

Answer 1

so its mostly if your taking the test in usatest prep it would be 3x -2x

Answer 2

Let x be the number. With this representation, double this number is 2x and thrice is 3x. We are asked to give an expression for the difference (subtraction) of these numbers, the answer to this question should be,
3x - 2x