Equation dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Martha Clarke

In mathematical terms, an equation is a mathematical equivalency containing unknown variables. Therefore, in dreams it can mean confrontation between equal forces. Also it points out a situation that is unclear and indicates difficult problems.
Source: The Big Dictionary of Dreams Author: Martha Clarke

Interpretation 2 — Joan Seaman - Tom Philbin

Looking to find a solution to a problem in life that should be working out but isn’t.
Source: New American Dream Dictionary Author: Joan Seaman - Tom Philbin