Răspuns:
[tex] (\frac{12}{10} + \frac{33 - 3}{9}) \div \frac{56 - 5}{9} = [/tex]
[tex] (\frac{12}{10} + \frac{30}{9}) \div \frac{51}{9} = [/tex]
[tex] \frac{12 \times 9 + 30 \times 10}{90} \div \frac{51}{9} = [/tex]
[tex] \frac{108 + 300}{90} \div \frac{51}{9} = [/tex]
[tex] \frac{408}{90} \div \frac{51}{9} = [/tex]
[tex] \frac{408}{90} \times \frac{9}{51} = [/tex]
[tex] \frac{8}{10} \times \frac{1}{1} = [/tex]
[tex] \frac{8}{10} = \frac{4}{5} [/tex]
