Question

Elementele multimii A={xe N / 3 < 2x-1<7} sunt....

Answer 1

3<2x-1<7
3<2x-1
3+1<2x
4<2x
4/2<x
2<x

2x-1<7
2x<7+1
2x<8
x<8/2
x<4
A = { 3}