Question

2. (1 балл) Сократите дробь
45a7/ 18а9​

Answer 1

$\dfrac{45a {}^{7} }{18a {}^{9} } = \dfrac{5a {}^{7} }{2a {}^{9} } = \dfrac{5}{2a {}^{9 - 7} } = \dfrac{5}{2a {}^{2} } .$