Вопрос школьника по предмету Математика
Решите уравнение: 3(x+6)=x+2(x+9)
Укажите правильный вариант ответа:
1)36
2)x- любое число
3)корней нет
4)0
Ответ учителя по предмету Математика
Ответ:
Пошаговое объяснение:
3(x+6)=x+2(x+9)
3x + 18 = x + 2x + 18
3x + 18 = 3x + 18
3x — 3x = 18 — 18
0 = 0
ответ: 2) x- любое число
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