SOLUTION: Solve the system of equations. 3y - 2x = 8 3y + 5x = -20

Algebra ->  Matrices-and-determiminant -> SOLUTION: Solve the system of equations. 3y - 2x = 8 3y + 5x = -20      Log On


   



Question 837365: Solve the system of equations.
3y - 2x = 8
3y + 5x = -20

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract one equation from the other to eliminate y
3y-2x-3y-5x=8-%28-20%29
-7x=28
x=-4
Use either equation to solve for x.
3y%2B5%28-4%29=-20
3y-20=-20
3y=0
y=0