Выполните приведение подобных слагаемых:
1) а + 6,2а - 6,5а – а;
2) 0,9n - 1,3n + 0,7n + n;
3) 10a + b – 10b – а;
4) -8y + 7x + 6y + 7x;
5) -8x + 5,2a +3x+ 5a;
6) 5a + 7a - 9,2m + 15m;
7) -6a + 5a – x + 4;
8) 23x – 23 + 40 + 4x;
9) -12p + 3k + 3,2p – 2,3k.
1) а + 6,2а - 6,5а – а;
2) 0,9n - 1,3n + 0,7n + n;
3) 10a + b – 10b – а;
4) -8y + 7x + 6y + 7x;
5) -8x + 5,2a +3x+ 5a;
6) 5a + 7a - 9,2m + 15m;
7) -6a + 5a – x + 4;
8) 23x – 23 + 40 + 4x;
9) -12p + 3k + 3,2p – 2,3k.
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Ответ:
1) а + 6,2а - 6,5а – а = -0,3а
2) 0,9n - 1,3n + 0,7n + n = 1,3n
3) 10a + b – 10b – а = 9а-9b
4) -8y + 7x + 6y + 7x = -2у+14х
5) -8x + 5,2a +3x+ 5a = -5х+10,2а
6) 5a + 7a - 9,2m + 15m = 12а+5,8m
7) -6a + 5a – x + 4 = -а-х+4
8) 23x – 23 + 40 + 4x = 27х+17
9) -12p + 3k + 3,2p – 2,3k = -8,8р+0,7k