Răspuns:
[tex] \bf a) \: \frac{3}{21}^{(3} = \frac{3 \div 3}{21 \div 3} = \boxed{ \frac{1}{7} } \\ \\ \bf b) \: \frac{12}{15}^{(3} = \frac{12 \div 3}{15 \div 3} = \boxed{ \frac{4}{5} } \\ \\ \bf c) \: \bf \frac{27}{6}^{(3} = \frac{27 \div 3}{6 \div 3} = \boxed{ \frac{9}{2} } \\ \\ \bf d) \: \frac{39}{72}^{(3} = \frac{39 \div 3}{72 \div 3} = \boxed{ \frac{13}{24} } \\ \\ \bf e) \: \frac{66}{99}^{(3} = \frac{66 \div 3}{99 \div 3} = \boxed{ \frac{22}{33} } \\ \\ \bf f) \: \frac{36}{96}^{(3} = \frac{36 \div 3}{96 \div 3} = \boxed{ \frac{12}{32} } [/tex]
