Question

P = {x / x ∈ IN, 6 < x ≤ 8} Q = {x / x ∈ IN, 2 (x – 5) = x – 4} R = {x / x ∈ IN, 8 = 5 + x}, calcula P ∪ Q ∪ R.

Answer 1

Que no entiendo lo siento