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Reduce compound fractions to simple ones, and mixt numbers to improper fractions ; then multiply the numerators together for a new numerator, and the denominators for. a new denominator.
The Western Calculator, Or, A New and Compendious System of Practical ... - Page 123
by Joseph Stockton - 1839 - 203 pages

Clavis Arithmeticae: Or, A Key to Arithmetick in Numbers & Species ;wherein ...

John Parsons - Algebra - 1705 - 284 pages
...Dtmminator by the Integer. » Examp. Л Z/¿ £ a/ the Quantities given be Frallkns, multi'^ly tiie Numerators together for a new Numerator, and the Denominators for a new Denominator, and this new Fraftion will be the Pmdutt. Exam}. Í xc~-aL For Í c= Ie andrf) £(=«. ^ becaufe 2...

The Young Mathematician's Guide: Being a Plain and Easie Introduction to the ...

John Ward (of Chester.) - Mathematics - 1724 - 480 pages
...making them improper fractions, and whole Qwttilies by fabfaiking an Unit under them. As fer Sect. 3. Then Multiply the Numerators together for a new Numerator: And the Denominators together for a new Denominator. As iff V«l* gar Fractions. Thus 1X2 ab 't abd •2ddJf.dc b Suppofe...

Cockers Arithmetick, perused by J. Hawkins

Edward Cocker - 1736 - 204 pages
...Multiplication of Vulgar Fraffiwis. .«. TF the Multiplicand and Multiplier are fimple FraftiA ons, then multiply the Numerators together for a •new...Numerator, and the Denominators for a new Denominator, and the new Fraction is the Product required. l^ntfl. i. What is the Product of * by Tf p tacit ±4,...

The Young Algebraist's Companion: Or, A New & Easy Guide to Algebra ...

Daniel Fenning - Algebra - 1751 - 272 pages
...courageous in every new Undertaking: Come then, Multiply^ by ^. ГутТуг. If I remember, I am only to multiply the Numerators together for a new Numerator, and the Denominators for a new Denominator. Thus, a X \=.ac,andbKd-bd: Anf. % Phi. You are very right. Now multiply ^ — î-£ _ Туг. Firft,...

A System of Practical Mathematics: ... With a Plain Account of the Gregorian ...

John Potter - Mathematics - 1753 - 568 pages
...Fractions together. Rule. Reduce the mixed Number to an improper Fraction, by Art. 2 ; then proceed to multiply the Numerators together for a new Numerator, and the Denominators for a new Denominator, as in the two hit Articles. Exam. i. Multiply 12 I by 12 _4 48 — 5» V Exam. ^. Multiply 3 £ by...

Arithmetic, in All Its Parts, Vulgar and Decimal: As Also, Tables of Coins ...

William Craighead - Arithmetic - 1757 - 584 pages
...SECTION V. Mu/ti flicati on of Vulgar Frafíions. I. If fin gle fractions are given to be multiply 'd, multiply the Numerators together for a new Numerator, and the Denominators for a new Denominator, and the new fraftion is the produft required. Examplft, What's the produft, when ^ is multiply'd by...

An Introduction to Algebra: With Notes and Observations: ... By John ...

John Bonnycastle - 1782 - 272 pages
...From 3*-f 4 take х~ —?• o с oс PROBLEM Vni. 9*е multiply fractional quantities together. RULE. Multiply the numerators together for a new numerator, and the denominators for a new denominator, and it will give the produft required. EXAMPLES: 1. Find the produft of-í. and — . 6 9 ' Ï X 2...

The London Magazine Enlarged and Improved, Volumes 2-3

English essays - 1784 - 1048 pages
...whole numbers. 54. QUESTION IV. by Mr. J. WEBB. If the numerators of two unequal fractions be added together for a new numerator, and the denominators for a new denominator, the fraction thence arifing will be greater than one of the given fractions, and lefs than the other...