. A new treatise of arithmetick and book-keeping : Containing I. Arithmetick: wherein the theory and practice are mixt together after a new method, II. Book-keeping: in which the first principles, and fundamental general notions and rules of that admirable method of accompts by debtor and creditor, are fully explained: the whole illustrated with two sets of books filled with examples of fictitious trade, such as may, and does most ordinarly [!] occur . .35; 1^25 (^6140 1)6(6 6. 00 Now 9(5 FRACTIONS. No w 5; being here found the greateft common Divifor or Meafure] by it di*vide both Numerator a
. A new treatise of arithmetick and book-keeping : Containing I. Arithmetick: wherein the theory and practice are mixt together after a new method, II. Book-keeping: in which the first principles, and fundamental general notions and rules of that admirable method of accompts by debtor and creditor, are fully explained: the whole illustrated with two sets of books filled with examples of fictitious trade, such as may, and does most ordinarly [!] occur . .35; 1^25 (^6140 1)6(6 6. 00 Now 9(5 FRACTIONS. No w 5; being here found the greateft common Divifor or Meafure] by it di*vide both Numerator and Denominator, thus, jiilumecfltoj, SDenominato?, 5^1625(^325 5 ^ 11410 (zzSz 15 10 12 14 10 10 2) 41 25 40 10 So the FraBion fought is =VVr the low-10 eft Ex^reffion that is equal to rf/rV Re A SON of this /i«/^, There remains to demonftrate the Rule for finding thegreateft common Meafure or Divifor to the Numerator or Denominator^ (i. e. toany two given Numbers) which I do thus, — what a Multiple is, we have feendefined in Divifion, viz,, a Number which contains another, a certain Numberof times without a Remainder. Having this premifed, the Demonftration will bebuilt on the following Fvopfitions: ijh. Every Number Meafures, or is contai-ned in it felf exactly once j this is felf evident, and from the Definition tis evi-dent it meafures all its own Multiples. Hence follows ^do. That Numberwhich meafures, /. e. divides another exadly, will meafure all the Multiples
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