Question

Write the negation of the following statement:

∀𝑥∃𝑦(𝑥 + 𝑦 = 2 ∧ 2𝑥 − 𝑦 = 1

Answer 1

$\exists x \forall y(x+y \neq 2 \lor 2x-y \neq 1)$