Question

Aveți în poză ce trebuie rezolvat. VA ROG URGENT, DACA SE POATE, SA RASPUNDETI IN CEL MAI SCURT TIMP POSIBIL!!! DAU COROANA SI 100 DE PUNCTE!!!​

Answer 1

Răspuns:

$a) \frac{25}{32} \div \frac{15}{24} = \frac{25 {}^{(5} }{32 {}^{(8} } \times \frac{24 {}^{(8} }{15 {}^{(5} } = \frac{5}{4} \times \frac{3 {}^{(3} }{3 {}^{(3} } = \frac{5}{4} \times 1 = \frac{5}{4} \\ b) \frac{51}{26} \div \frac{84}{91} = \frac{51 {}^{(3} }{26 {}^{(13} } \times \frac{91 {}^{(13} }{84 {}^{(3} } = \frac{17}{2} \times \frac{7 {}^{(7} }{28 {}^{(7} } = \frac{17}{2} \times \frac{1}{4} = \frac{17}{8} \\ c) \frac{117}{42} \div \frac{198}{119} = \frac{117 {}^{(9} }{42 {}^{(7} } \times \frac{119 {}^{(7} }{198 {}^{(9} } = \frac{13}{6} \times \frac{17}{22} = \frac{221}{132} \\ d) \frac{36}{49} \div \frac{84}{81} = \frac{36 {}^{(12} }{49} \times \frac{81}{84 {}^{(12} } = \frac{3}{49} \times \frac{81}{7} = \frac{243}{343}$

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