Question

6. Dacă |1-4x| ≤ 5, x E Z, atunci x aparține mulţimii:​

Answer 1

$-5\leq 1-4x\leq 5\\-6\leq -4x\leq 4\\\frac{3}{2} \geq x\geq -1$

$x$ ∈ $[-1,\frac{3}{2}]$ ∩ Z = {-1, 0, 1}