Learn how to use inverse operations to find the value of an unknown variable in an equation, so that the value is true.

A Singapore math problem has gone viral, leaving many asking, "When is Cheryl's Birthday?" ABC News' Gio Benitez solves the puzzle in a step-by-step video guide.

A mathematician at Carnegie Mellon University has developed an easier way to solve quadratic equations. Here's the secret.

Equations such as 3𝑥 + 8 = 15 need two steps. Make sure you are confident in calculating with negative numbers, which is a skill often needed to solve equations.