SOLUTION: solve the linear system using elimination 1/4x-2/3y=7 1/2x+2/3y=-4

Algebra ->  Linear-equations -> SOLUTION: solve the linear system using elimination 1/4x-2/3y=7 1/2x+2/3y=-4      Log On


   



Question 125171: solve the linear system using elimination
1/4x-2/3y=7
1/2x+2/3y=-4

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
solve the linear system using elimination
1/4x-2/3y=7
1/2x+2/3y=-4
----------------
Add the two equations to get:
(3/4)x = 3
x = 4
------------
Substitute to solve for Y:
(1/2)*4 + (2/3)y = -4
(2/3)y = -6
y = -9
----------------
Cheers,
Stan H.