Раскрытие скобок. Коэффициент. . Урок 3
Раскройте скобки и объедините похожие члены: 2 (2x-y) - 4 (x-3Z)+2 (5y-3y)
1) 8y – 6z
2) –8y + 6z
3) 8y + 6z
4) 8x + 8y + 6z
помогите пж
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