Question

9 класс хелп
|7-3x|+4x>5

Answer 1

$|7-3x|+4x textgreater 5; \ |7-3x| textgreater 5-4x; \ |f(x)| textgreater g(x); \ left [ {{f(x) textgreater g(x);} atop {f(x) textless -g(x);}} right. textless = textgreater left [ {{7-3x textgreater 5-4x;;} atop {7-3x textless -(5-4x);}} right. textless = textgreater left [ {{-3x+4x textgreater 5-7;} atop {-3x-4x textless -5-7;}} right. textless = textgreater left { {{x textgreater -2;} atop {x textgreater 1 frac{5}{7}; }} right. \ x in(-2;+ infty).$