Ответ:
а) 7x-18x+25x-6x = 8x
б) -3b-14b+31b+7b = 21b
в) 11а-16b-18a+9b = -7a-16b+9b = -7a-7b
г) -8k+9p-17k+5k+14p = -20k+9p+14p = -20k+23p
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Ответ:
а) 7x-18x+25x-6x = 8x
б) -3b-14b+31b+7b = 21b
в) 11а-16b-18a+9b = -7a-16b+9b = -7a-7b
г) -8k+9p-17k+5k+14p = -20k+9p+14p = -20k+23p