Question

помогите.
$\frac{27}{40} \div 18 + \frac{9}{16 } =$
мне завтра нужно:/​

Answer 1

$1) \: \frac{27}{40} \div 18 = \frac{27}{40} \div \frac{18}{1} = \frac{27 ^{3} × 18 }{40 \times 18 ^{2} } = \frac{ 3}{80}$

$2) \: \frac{3}{80} + \frac{9}{16} ^{5} = \frac{3 + 45}{80} = \frac{48}{80} = \frac{3}{5}$