Aˊlgebra

it is the Science of Quantity in general, or a peculiar Method of Reasoning, which takes the Quantity sought, as if it were known, and then by the Helps of another or more Quantities given, proceeds by undeniable Consequences, till at length the Quantity first only supposed to be known, is found to be equal to some Quantity or Quantities certainly known, and it is two-fold, either numeral or literal: It is called the Analytical Art.