Posted by al on Thursday, January 13, 2011 at 12:59am.
substitution
4x + 3y = 3
7x  9y = 6

math  Reiny, Thursday, January 13, 2011 at 8:41am
from the 1st
3y = 34x
or 9y = 9  12x
now sub that into the 2nd
7x  (912x) = 6
19x = 15
x = 15/19
back into 3y = 34x
3y = 3  60/19 = 3/19
y = 1/19