Question

Решите неравенство: |2-x|>1/3

Answer 1

l2-xl>1/3⇔[2-x>1/3 ⇒[-x>1/3-2⇔[-x>-5/3⇔[x<5/3⇔x∈(-∞;5/3)
                 [-2+x<1/3  [x<1/3+2   [x<7/3     [x<7/3