Question

20-3*( x -5) меньше 17-7x

Answer 1

$20-3(x-5) textless 17-7x\20-3x+15 textless 17-7x\35-3x textless 17-7x\18+4x textless 0\4x textless -18\x textless -4,5$
x∈(–∞; –4,5)

Answer 2

20-3*(х-5)<17-7x
--3(x-5)<17-20-7x
-3x+15<-3-7x
-3x+7x<-3-15
4x<-18
x<-4,5
x]- бесконечность;-4,5 [