Question

Ajutor.Cine mă poate ajuta la punctele f si d?Mulțumesc!

Answer 1

$5 \frac{4}{9} = \frac{5\times 9 + 4}{9} = \frac{49}{9}$
$d)( \frac{49}{9} )^{18} \div ( \frac{49}{9} )^{17} = (\frac{49}{9})^{18 - 1} = (\frac{49}{9} )^{1} = \frac{49}{9}$
La fel si la f)
$4 \frac{4}{15} = \frac{4 \times 15 + 4}{15} = \frac{64}{15}$
$( \frac{64}{15} )^{23} \div ( \frac{64}{15} ) ^{22} = \frac{64}{15}$