Предмет: Математика, автор: Аноним

Помогите решить № 182

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Автор ответа: Депрессин
0
1) 2x-(2x+y)+y= 2x-2x-y+y=0
2) -a+(2a-b)+2b= -a+2a-b+2b=a+b
3) 7-(b+14)-2b= 7-b-14-2b=-7-3b
4) 3b-(18+b)+8= 3b-18-b+8=2b-10
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