Предмет: Математика, автор: tsukanov79

решить задачу составить уравнение.сумма неизвестного числа и числа 390 равна произведению чисел 70 и 6.найди это число

Ответы

Автор ответа: Ellenochka
0
x+390=70*6 \ x=420-390 \ x=30
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