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A method to multiply or divide any number of figures : by a like or a less number, so expeditely, that any fifty figures may either be multiplied or divided by any fifty figures, all in one line, in five minutes time. ... Invented by Quin Mackenzie-Quin
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Algebra, or, the doctrine of composing, inferring, and resolving an equation : by which any resolvable question, requiring either a number, or a magnitude, may be fully satisfyed, and consequently new, usefull, & sometimes admirable inventions, may infinitely be added to the mathematicks
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