а) 2х*(с-3) - у*(с-3) = (2х-у)*(с-3)
б) 5х*(3а+2b) - 7y*(2b+3a) = (3a+2b)*(5x-7y)
в) 8p*(7q+1)-1*(1+7q) = (1+7q)*(8p-1)
а) 2х*(с-3) - у*(с-3) = (2х-у)*(с-3)
б) 5х*(3а+2b) - 7y*(2b+3a) = (3a+2b)*(5x-7y)
в) 8p*(7q+1)-1*(1+7q) = (1+7q)*(8p-1)