Răspuns:
[tex] \frac{7 {}^{10} + 2 \times 7 {}^{11} + 3 \times 7 {}^{12} }{12 \times 7 {}^{10} } \\ \\ = \frac{7 {}^{10} + 2 \times 7 \times 7 {}^{10} + 3 \times 7 {}^{2} \times 7 {}^{10} }{12 \times 7 {}^{10} } \\ \\ = \frac{(1 + 2 \times 7 + 3 \times 7 {}^{2}) \times 7 {}^{10} }{12 \times 7 {}^{10} } \\ \\ = \frac{(1 + 14 + 3 \times 49) \times 7 {}^{10} }{12 \times 7 {}^{10} } \\ \\ = \frac{1 + 14 + 147}{12} \\ \\ = \frac{162 { {}^{} }^{(6} }{12} \\ \\ = \bf\blue{\boxed{ \frac{27}{2} }}[/tex]
