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equation (EN)
noun

noun “equation”

singular equation, plural equations
  1. (in mathematics) a statement that two expressions are equal, shown with an equal sign
    The equation E = mc² describes the relationship between energy and mass.
  2. the act of making things equal or considering them as equal
    The equation of happiness with material wealth is a common mistake.
  3. a situation where several things must be considered together
    Personal preferences are part of the equation when buying a house.