Приведите подобные члены:
1)-8a-5a+7a+2a;
2)1,3n-4,3n-5,7n-2,9n;
3)21b-10b+9b-12b.
1)-8a-5a+7a+2a;
2)1,3n-4,3n-5,7n-2,9n;
3)21b-10b+9b-12b.
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Answers & Comments
2)1,3n-4,3n-5,7n-2,9n = -11,6n;
3)21b-10b+9b-12b = 8b.
2)-11.6a
3)8b
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