Question

Rezolva inecuația 5x+1< sau egal21

Answer 1

5x+1≤21
5x≤21-1
5x≤20
x≤20:5
x≤4

Answer 2

∅ Rezolvare : 5x + 1 ≤ 21 => 5x ≤ 21 - 1 => 5x ≤ 20 => x ≤ 20 : 5 => x ≤ 4 => S = { 0 , 1 , 2 , 3 , 4 }