Актушев выдал своей жене расписку

Actushev issued a receipt to his wife in that he, when making a will for property belonging to him, would not determine the proportion of his children from his first marriage. After the death of Aktushev in his will, certified by a notary, his son was appointed in equal shares - 21 years old and his daughter - 26 years old. Aktusheva filed a lawsuit declaring this testament invalid, referring to a receipt issued to her during the life of Aktushev. How to solve the case?

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