Question

1) -2<3x+1<7;
2) 2<5x-3<17;
3) 3<7-4x<15;
4) -12 2(x+3)<4.​

Answer 1

Ответ:

1) -3<3х<6

-1<х<2

2) 5<5х<20

1<х<4

3) -4<-4х<8

4>4х>-8

1>х>-2

-2<х<1