Ответ:
3а=(3•5;3•(-1))=(15;-3)
2в=(2•4;2•(-5))=(8;-10)
3а+2в=(15;-3)+(8;-10)=(23;-13)
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Ответ:
3а=(3•5;3•(-1))=(15;-3)
2в=(2•4;2•(-5))=(8;-10)
3а+2в=(15;-3)+(8;-10)=(23;-13)