Вопрос школьника по предмету Математика
|-х+4|=7;|5-х|=2;|-х-8|=3
Заранее спасибо!
Ответ учителя по предмету Математика
|-x+4|=7
-x+4=7 или -х+4=-7
-х=7-4 -х=-7-4
Х= -3 х=11
|5-х|=2
5-х=2 или 5-х=-2
х=3 х=7
|-х-8|=3
-х-8=3 или -х-8=-3
х= -11 х=-5
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