Question

Va rog repedeee
Am nevoie de ajutor
Va rog fumoss

Answer 1

7/(2x-1) ∈Z=>2x-1∈D7

2x-1∈{-7; -1; 1; 7}      /+1

2x∈{-6; 0; 2; 8}       /:2

x∈{-3; 0; 1; 4}