Răspuns:
[tex]( \frac{2}{3} + \frac{1}{2} - \frac{3}{4} ) \div \frac{25}{100} [/tex]
[tex]( \frac{8}{12} + \frac{6}{12} - \frac{9}{12}) \div \frac{25}{100} [/tex]
Am amplificat si am adus la acelasi numitor comun. fractia 2/3 (cu 4), fractia 1/2 (cu 6), fractia 3/4 (cu 3).
[tex] (\frac{14}{12} - \frac{9}{12} ) \div \frac{25}{100} [/tex]
[tex] \frac{5}{12} \div \frac{25}{100} [/tex]
Aducem si aici la aceeasi numitori.
Multiplu (12;100) = 300
[tex] \frac{125}{300} \div \frac{75}{300} [/tex]
Am amplificat fractiile (5/12 cu 25) si (25/100 cu 3).
Simplificam fractiile (125/300 prin 125) si (75/300 prin 75)
[tex] \frac{1}{2.4} \div \frac{1}{4} = \frac{4}{1} \div \frac{2.4}{1} = \frac{2.4}{4} [/tex]
