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