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IF, 8. be worthe. 12. what are 14. worth after the rate, or els if. 8. require. 12. for his pro¦portionall, what will. 14. de∣maunde? The whiche three noum∣bers maie conuenientlie bee sette in soche order, as hereafter doeth appere.
If. 8.-12.-14. multiplie the thirde nomber. 14. by the seconde, whiche is. 12. And thereof commeth
(for the whole producte of this multi∣plication. 168. the whiche (as the rule teacheth) you muste diuide by the first nomber, that is to saie by. 8. and ther∣of commeth. 21. And so muche are the 14. worthe. This is the waie, whiche is moste vsed.
Otherwise diuide. 8. by. 12. whiche you can not doe, for thei are 8/72. where∣fore abreuie. 8/12. and thei are 2/9. for your quotient, then diuide the thirde nom∣ber. 14. by the saied ⅖, and you shall haue. 21. as before. Orels diuide the seconde nomber. 12. by the firste nom∣ber. 8. thereof commeth. 1 ½. the whiche 1 ½ you shall multiplie by 14. and ther∣of will come. 21. as is aboue saied, and thus muste you dooe of all other. And although, that the nōbers of this rule maie bee founde in three differences, for sometymes thei are whole nom∣bers and broken together, sometymes broken and broken together, and som∣tymes all whole nombers, if thei bee whole nombers, you muste doe none
otherwise, then you did in the last erā∣ple. But in case thei be broken noum∣bers, or broken and whole noumbers together, the maner and waie to dooe theim, recetueth a certaine variacion, and difficultee, according to the vari∣etie of the noumbers, the whiche ope∣ration easeiy to do, and vnuariable, this rule teacheth.
The three noumbers beyng sotte doune, according vnto the order of the whole noumbers aforesaied, without any broken nomber, let. 1. bee put al∣waies vnderneath euery whole nom∣ber, with a line betwene them fractiō wise, as thus 8/1. and that. 1. is denomi∣natour to euery soche whole nomber. When you haue whole nomber and broken, thei must bee reduced and ad∣ded with their broken nomber, and if there bée broken nomber without any whole nomber, thesame broken must remain in their estate.