Posted by carrie on Sunday, April 14, 2013 at 11:42am.
5u+2v=15
3u+v=8 Im not sure how to do this problem

college math  Reiny, Sunday, April 14, 2013 at 11:52am
double the 2nd:
6u + 2v = 16
5u + 2v = 15
subtract them:
u = 1
sub into 2nd:
3 + v = 8
v = 5
v = 5 and u = 1
(curious why you called this "college math", this is grade 7 )