Students will be given three univariate expressions, and asked to determine the value of the variable that would make the expressions consecutive terms of an arithmetic sequence. For example, find \(x\) such that \(2x,\) \(3x + 2,\) and \(5x + 3,\) are consecutive terms of an arithmetic sequence.

Next, give your students these challenges:

Conclude by leading this investigation:

64 = 65 Mathemagical Proof

by MathPickle