👤

[3x-1]=2. [x]-partea intreaga

Răspuns :

2≤3x-1<2+1=3

2≤3x-1<3  adunam 1 la fiecare termen

3≤3x<4  impartim prin 3 toata relatia

1≤x<4/3
x∈[1;4/3)