1. a(x – y) –b(x – y) 5. a(x + c) – b(x + c) 2. 5в – 20 -4х + хв 6. 2(x – 7) – y(7 – x) 2х +ух – 7у - 14 3. m – n +(n – m)y 7. x – p + (p – x)c 4. 2a + b + 2a2 + ab раскройте скобки дам 10 балов
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