Вопрос школьника по предмету Математика
(15+3•x):3+4=24 уравнение
Ответ учителя по предмету Математика
(15 + 3х) : 3 + 4 = 24
(15 + 3х) : 3 = 24 — 4
(15 + 3х) : 3 = 20
15 + 3х = 20*3
15 + 3х = 60
3х = 60 — 15
3х = 45
х = 15
ОТВЕТ: 15
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