Question

Rezolvați :
B= {x e N/2x-1 <7}

Answer 1

2x-1<7
2x<7+1
2x<8
x<8:2
x<4
X∈{0,1,2,3}

Answer 2

[tex]B= [ x eN|2x-1\ \textless \ 7]=\ \textgreater \ 2x-1\ \textless \ 7 =\ \textgreater \ 2x\ \textless \ 7+1=\ \textgreater \ 2x\ \textless \ 8=\ \textgreater \ [/tex]$x\ \textless \ \frac{8}{2} =\ \textgreater \ x\ \textless \ 4=\ \textgreater \ x=[0,1,2,3]$