Вопрос школьника по предмету Математика
Задумали число прибавили к нему 20 результат умножили на 2 и к тому что чтобы получилось прибавили 7
из полученного числа вычислить удвоенное задуманное число какое число получили результат всех вычислений
Ответ учителя по предмету Математика
Пусть это число х
(х+20)*2+7-2х=2х+40+7-2х=40+7=47
Ответ: 47
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