SOLUTION: Solve these equations by addition. 3x - 4y = 7 3x + 2y = -5 The lines intersect at (?,?)

Algebra ->  Graphs -> SOLUTION: Solve these equations by addition. 3x - 4y = 7 3x + 2y = -5 The lines intersect at (?,?)       Log On


   

Question 256413: Solve these equations by addition.
3x - 4y = 7
3x + 2y = -5
The lines intersect at (?,?)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
3x - 4y = 7
3x + 2y = -5
------------- Subtract (or multiply one of the eqns by -1, and add)
0x - 6y = 12
y = -2
-------
x = -1/3
-----------
The intersection is at (x,y) = (-1/3,-2)