Fiona eats 3/8 of a pizza. Alan then eats 2/3 of what is left. What fraction of the pizza is still in the box?

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

Asystem of equations has 1 solution.if 4x-y=5 is one of the equations , which could be the other equation ?

Having a hard time understanding this question (see attachment).