Question

-1<2x+5 supra 3<3 va rog

Answer 1

-1 < (2x+5)/3 <3     aducem la acelasi numitor

-3 < 2x+5 < 9 |-5

-8 < 2x < 4 |:2

-4 < x < 2

x= (-4;2)

x={-3;-2;-1;0;1}