SOLUTION: solve each system of equations. -3x-y=4 4x+2y=-8

Question 885408: solve each system of equations.
-3x-y=4
4x+2y=-8
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
-3.00 x -1.00 y = 4.00 .............1

4.00 x + 2.00 y = -8.00 .............2
Eliminate y
multiply (1)by 2.00
Multiply (2) by 1.00
-6.00 x -2.00 y = 8.00
4.00 x + 2.00 y = -8.00
Add the two equations
-2.00 x = 0.00
/ -2.00
x = 0.00
plug value of x in (1)
-3.00 x -1.00 y = 4.00
0.00 -1.00 y = 4.00
-1.00 y = 4.00 + 0.00
-1.00 y = 4.00
y = -4.00

RELATED QUESTIONS
use an augmented matrix to solve each system of equations -2x+2y=-8... (answered by Alan3354)

Solve each system of equations: 2x= y+12 3x+2y= -3 What I did: (2x=y+12)2... (answered by TimothyLamb,Alan3354)

solve each system of equations algebraically 3x-2y=8... (answered by user_dude2008)

Solve each system of equations 4x-y=-5 4x-3y=8 (answered by mananth)

Use elimination to solve each system of equations. -4x+2y=8... (answered by checkley75)

It says to solve the following System of equations by either addition or substitution?? (answered by josgarithmetic,MathTherapy)

help solve the system of equations by graphing y+2x=-4... (answered by Jk22)

Solve system of equations by graphing 2x-y=4... (answered by stanbon)

SOLVE EACH SYSTEM OF EQUATIONS BY USING ELIMINATION 1. 3x-2y=4 2x+3y=7 2.... (answered by MathLover1)