Originally Posted by
highdrake I have to solve this by way of the substitution method, please help.
1/5x + 2/3y = -73/5
(1/5)x + (2/3)(3x-12) = -73/5
3x-y=12, solve for y ... y = 3x-12 ... substitute for y in the above equation, then solve for x
One more:
5x+7y=15
5(6-2y) + 7y = 15
x=6-2y same drill with x, then solve for y