It was made in 1689
-x divided by -5 is x/5.
5
85
k divided by 5
5 divided by 1 is 5. 1 over 4 is a quarter. 5 divided by 1¼ is 5 divided by 5/4, which is 5 time 4/5, that is 4.
0.625
8.2
Abell 1689 is a galaxy cluster and will have varying ages from billions to hundreds of years.
William and Mary, who inaugurated their rule in 1689, believed in
4
5