ПОМОГИТЕ ПОЖАЛУЙСТА!!!! ДАЮ 38 БАЛЛОВ!!!!!!!!!! 1)−6−a и a+17 =a+17=?
2)a-b+ca−b+c и -a+b+c =−a+b+c=?
3)7,3−4,6+5,8 и -10,4+4,6-5,8 =−10,4+4,6−5,8=?
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