Three times a the sum of a number and 7 is 45 I really need hlp can sumbody anybody hlp please Apr 15 | Khadijah from Greenwood, MS | 1 Answer | 0 Votes
if a+b=1000, and 7a+15b=11504, what is value of a and b? solve for a and b 2/27/2013 | Paige from Wailuku, HI | 1 Answer | 0 Votes