November 2021 1 13 Report
Приведите подобные слагаемые
1) 7а - 19а + 28а - 2а
3) 2,7m - n + 3,5m - 2,7n
5) 2,6p - 0,7k + 1,3 - 3,1p + 2,8k
Заранее спасибо!
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