9 класс хелп
|7-3x|+4x>5

Question

Алгебра

Светозар

6 год назад

9 класс хелп
|7-3x|+4x>5

ОТВЕТЫ

Сокирко

Aug 15, 2019

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

114

9 класс хелп |7-3x|+4x>5

9 класс хелп
|7-3x|+4x>5