Question

срочно!!!!
дам 20 баллов ​

Answer 1

Ответ:

$7( \frac{2}{7} x - \frac{3}{2} ) = 4( \frac{3}{4} x - \frac{5}{2} ) \\ 2x - \frac{21}{2} = 3x - 10 \\ 2x - 3x = - 10 + \frac{21}{2} \\ - x = \frac{ - 20 + 21}{2} \\ - x = \frac{1}{2} \\ x = - \frac{1}{2} \\ x = - 0.5$