7<=2x+3<=11 теңсіздіктерді шешіңдер?

Question

1)7<=2x+3<=11

2)-3<1+2x<=7

3)-2<8+x/7<4

4)-7<=2x+1/2<2

Answer 1

1)7<=2x 3<=11
4<=2х<=8
2<=х<=4
2)-3<1 2x<=7
-4<2х<=6
-2<х<=3
3)-2<8 x/7<4
-10<х/7<-4
-70<х<-28
4)-7<=2x 1/2<2
-13/2<=2х<3/2
-13/4<=х<3/4