Example of duplation.
IF you will double ⅜ you shal diuide 3/•• by ½, and thereof com∣meth 6/8, which being ab∣breuied 〈 math 〉〈 math 〉 are ¾: as by ex∣ample.
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IF you will double ⅜ you shal diuide 3/•• by ½, and thereof com∣meth 6/8, which being ab∣breuied 〈 math 〉〈 math 〉 are ¾: as by ex∣ample.
Or otherwise, in case the denomina∣tor of any fraction bee an euen num∣ber, you may take halfe the sayde de∣nominator, without anye other ope∣ration, and the numerator to abyde still ye numerator, vnto the said halfe of the denominator of the Fractiō, as by the other exāple before rehearsed: that is to say of 〈◊〉〈◊〉, take ½ of 8. which is 4. and that is the denominator, and 3. remaineth stil numerator to 4. and it maketh ¾ and so of all other. But in case the denominator bee an odde nomber, that is to say, not euen, then you may multiply the numerator by 2. or els double ye numerator, whiche is al one thing; and that fraction shall bee doubled. Example, if you will double ••/5 you must onely multiply the numerator 3. by 2. & they be 6. whiche maketh that fraction to be 〈◊〉〈◊〉, the which 6. being diuided by 5. bringeth 1. ⅕ and so much is the double of 3/••.