Ответ:
а) -xa-3x
б) 15a-10b+5c
в) -a-3b+3b-4 = -a+4
г) 1,2c+15+7-1,2c = 15+7 = 22
д) 16-4a-16-8a = -4a-8a = -12a
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Ответ:
а) -xa-3x
б) 15a-10b+5c
в) -a-3b+3b-4 = -a+4
г) 1,2c+15+7-1,2c = 15+7 = 22
д) 16-4a-16-8a = -4a-8a = -12a