Question

помогите решить уравнения

Answer 1

Ответ:

$0.3(2x - 1) - 0.4(x + 8) = 1.2 - 1$

$0.6x - 0.3 - 0.4x - 1.2 = 12 - 1$

$0.2x - 1.5 = 12x - 1$

$0.2x - 1.2x = 1 + 1.5$

$- x = 0.5$

$x = - 0.5$