2х - 3(х - 7) > 0 9х - 4(х - 7) < - 3

Question

2х - 3(х - 7) > 0 9х - 4(х - 7) < - 3

Answer 1

1. 2х-3(х-7)>0

2х-3х=7-3

-х=4

-х=-4:-1

х=4

4>0

2. 9х-4(х-7)<-3</p>

9х-4х=-3-7

5х=-10

х=-10÷5

х=-2

-2<-3</p>