6. Let (G, *) be a group. Show that each equation of either the form ax
= b or the form xa = b has a unique solution in G.
7. Show that (R – {1}, *), where a * b = a + b + ab is a group
6. Let (G, *) be a group. Show that each equation of either the form ax = b or the form xa = b has a unique solution in G.
7. Show that (R - {1}, *), where a * b = a + b + ab is a group