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myauMrr
@myauMrr
October 2021
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Раскройте скобки и упростите выражение
а)2х-(2x+y)+y
б)-a+(2a-b)+2b
в)7-(b+14)-2b
г)3b-(18+b)+8
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jekadva
а)2х-(2x+y)+y=2x-2x-y+y=0
б)-a+(2a-b)+2b=-a+2a-b+2a=3a-b
в)7-(b+14)-2b=7-b-14-2b=-7-3b
г)3b-(18+b)+8 =3b-18-b+8=2b-10
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myauMrr
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Answers & Comments
б)-a+(2a-b)+2b=-a+2a-b+2a=3a-b
в)7-(b+14)-2b=7-b-14-2b=-7-3b
г)3b-(18+b)+8 =3b-18-b+8=2b-10