карандаш стоит х коп., а ручка - у коп. Петя купил 6 карандашей и 4 ручки, а Вася карандаш и 2 ручки
вариант А2. С-10. Многочлены.
сборник Ершова Голобородько 7 класс.
#ms7класс
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