Question

Solve.
3x + 1 < 2x - 2 < 5x +7


A)
x < -3 and x > -3

B)
-3 < x < 3

C)
x < -3

D)
no solution

Answer 1

...

3x+1<2x-2<5x+7
3x-3x+1<2x-3x-2<5x-3x+7
1<-x-2<2x+7
1+2<-x-2+2<2x+7+2
3<-x<2x+9

even if you multiply it by (-1)
you'll not be able to get all x-es
in one side...
I THINK there's no solution.
But still not sure... wait till someone else tells , if I'm right or wrong :)

Answer 2

OK. Thanks

Answer 3

It was right.