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Unformatted text preview: Feel free to pass this on to your friends, but please don’t post it online. Discuss UPCAT and other college entrance exam questions and answers at Academic-Clinic’s Facebook Page. We encourage you to answer the questions we post there and actively participate in the discussions on our wall. For UPCAT, ACET, DLSUCET and USTET tips, tricks, news and other college entrance exam information, visit the Academic-Clinic website. Tell your friends and classmates to come find and join us. The more, the merrier. Good luck! AcademicAcademic Academic-Clinic.com The achiever’s guide to academic life and beyond… W ebsite: http://academic-clinic.com Facebook: http://www.facebook.com/academic.clinic Twitter: http://twitter.com/acadclinic College entrance exam and science high school entrance test tips. Conquer UPCAT, ACET, USTET, DLSUCET, PSHS-NCE, and other entrance tests. Addition and subtraction of fractions. If denominators of fractions are the same, then in order to add the fractions it is necessary to add their numerators; in order to subtract the fractions it is necessary to subtract their numerators (in the same order). The received sum or difference will be a numerator of the result; a denominator is saved the same. If denominators of fractions are different, before these operations it is necessary to reduce fractions to a common denominator. At addition of mixed numbers a sum of integer parts and a sum of fractional parts are found separately. At subtracting mixed numbers we recommend at first to reduce the mixed numbers to improper fractions, then to subtract these fractions and after this to convert the result into a mixed number again (in case of need). E x a m p l e. Multiplication of fractions. To multiply some number by a fraction means to multiply it by a numerator and to divide a product by a denominator. Hence, we have the general rule for multiplication of fractions: to multiply one fraction by another it is necessary to multiply separately their numerators and denominators and to divide the first product by the second. Example. Division of fractions. To divide some number by a fracti...
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