Please help me, i am on the test rn

If the class was going to get a class pet and 5 picked fish and 7 pick bird and 8 picked rabbits have many students were in the

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

Pls math have no ideamultiply and simppify. 2x^2y^3z^2 • 4xy^4x^2