Question

умоляю помогите вычислить
$3 \frac{1}{3} \div 1 \frac{1}{9} - 0.6 \div \frac{2}{3}$
$2 \div \frac{2}{3} + 1.8 \div \frac{2}{3}$
умоляю ​

Answer 1

$3 \frac{1}{3} \div 1 \frac{1}{9} - 0.6 \div \frac{2}{3} = \frac{10}{3} \times \frac{1}{9} - \frac{3}{5} \times \frac{3}{2} = \frac{10}{27} - \frac{9}{10} = - \frac{143}{270}$

$2 \div \frac{2}{3} + 1.8 \div \frac{2}{3} = 2 \times \frac{3}{2} + 1.8 \times \frac{3}{2} = 3 + \frac{27}{10} = \frac{57}{10} = 5.7$