is it healthful, ethical, legal, and parent approval
If you have paid for the car then it belongs to you regardless of what you do.
75 over 21 in lowest terms = 25/7
yes
21/35 = 3/5
0.84 as a fraction in lowest terms is 21/25.
21/17
A car loan is a contract. A contract can only be modified (unless declared illegal or void) with the agreement of all parties, so - no - the cosigners can not remove themselves without your approval.
It would depend if both names are on the title.
Bait Car - 2007 2011-08-21 was released on: USA: 21 August 2011
3/7
130 / 21