2x1+3y1 + 3y1+3y; 5ab+2ab + 2ab+2a; -20cc−4bc - 4bc−4b; c^63+7c−8c23 + 7c - 8c^23+7c−8c2; 2c^2x^23x−2c+13x - 2c + 13x−2c+1
2x1+3y1 + 3y1+3y; 5ab+2ab + 2ab+2a; -20cc−4bc - 4bc−4b; c^63+7c−8c23 + 7c - 8c^23+7c−8c2; 2c^2x^23x−2c+13x - 2c + 13x−2c+1