а) 42x^9y^7 : (7x^3y^4) = 6x^6y^3
б) 18a^5b^4c^3 : (-3a^3b^3c) = -6a^2b*c^2
в) -45m^6n^5k^4 : (-5m^6n) = 9nk^4
г) -8a^3b^2c : (-4a^2bc) = 2ab
а) 42x^9y^7 : (7x^3y^4) = 6x^6y^3
б) 18a^5b^4c^3 : (-3a^3b^3c) = -6a^2b*c^2
в) -45m^6n^5k^4 : (-5m^6n) = 9nk^4
г) -8a^3b^2c : (-4a^2bc) = 2ab