Выполнить преобразования
1.3a-a-b-12b-7
2.1,8y+3+2,8c-0,2-2y
3.-a+(b-c)-(x-y)
4.25-(m-n)-(a-b)
5.6x+(7-3x)
6.(2-4b)-(31b-6)-11
1.3a-a-b-12b-7
2.1,8y+3+2,8c-0,2-2y
3.-a+(b-c)-(x-y)
4.25-(m-n)-(a-b)
5.6x+(7-3x)
6.(2-4b)-(31b-6)-11
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Answers & Comments
1)3a-a-b-12b-7=2a-13b-7;
2)1,8y+3+2,8c-0,2-2y=2,8c-0,2y+2,8;
3)-a+(b-c)-(x-y)=-a+b-c-x+y;
4)25-(m-n)-(a-b)=25-a+b-m+n;
5)6x+(7-3x)=3x+7;
6)(2-4b)-(31b-6)-11=-35b-3;