решите неравенство: 20-3(x-5)<19-7x

ответы:

1) (-4; +бесконечность) ;

2) (-бесконечность; -1/4);

3) (-1/4; +бесконечность);

4) (-бесконечностьт; -4).

 

 

 

 

 

 

 

 

 

 

 

 

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