Решите неравенство 20-3(х-5)<19-7х

Question

Решите неравенство 20-3(х-5)<19-7х

Answer 1

20-3x+15<19-7x</p>

-3x+7x<19-20-15</p>

4x<-16 (:4)</p>

x<-4</p>

Answer 2

20- 3х+15=19-7х

-3х+7х=19-20-15

4х=-16

х=-4

ответ:-4