c) 7/ 9x^2 : -14y / 3x^3

c) 79x2:−14y3x3=79x2⋅3x3−14y=7⋅3x39x2⋅−14y

=7⋅3x2⋅x3x2⋅3⋅7⋅−2y=x3⋅−2y=−x6y.