A system of nonlinear equations is harder to solve than you think—and more of a puzzle than a math problem. Puzzles like this require you to look and find the one loose end you can pull to unravel the ...

Novelist Celeste Ng has shared a head-scratching system of equations that her 9-year-old son apparently made up over dinner: She’s right-using simultaneous equations does get really complicated, and ...

For all of the recent strides we’ve made in the math world—like a supercomputer finally solving the Sum of Three Cubes problem that puzzled mathematicians for 65 years—we’re forever crunching ...