equation in Wingdings is ♏︎❑︎◆︎♋︎⧫︎♓︎□︎■︎

An expression of the condition of equality between twoalgebraic quantities or sets of quantities, the sign = being placedbetween them; as, a binomial equation; a quadratic equation; analgebraic equation; a transcendental equation; an exponentialequation; a logarithmic equation; a differential equation, etc.