Question

Решите пожалуйста.
20 балов ваши")​

Answer 1

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

Ответ:

$1)3 \div ( \frac{6}{7} - \frac{3}{4}) = 3 \div ( \frac{24 - 21}{28} ) = 3 \div \frac{3}{28} = 3 \times \frac{28}{3} = 28 \\ \\ 4.5 \times 5.4 - 6.1 = 24.3 - 6.1 = 18.2$

$2)2 - 3(2x + 2) = 5 - 4x \\ 2 - 6x - 6 = 5 - 4x \\ - 6x + 4x = 5 - 2 + 6 \\ - 2x = 9 \\ x = - 4.5$

$3)112 \times 100 \div 14 = 800$

в школе всего 800 учащихся