SOLUTION: in elmination how would i solve this:x+2y=-9
4x+2y=6
Algebra.Com
Question 186643: in elmination how would i solve this:x+2y=-9
4x+2y=6
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
x+2y=-9
4x+2y=6
.
Multiply both sides of top equation by -1:
-x-2y=9
4x+2y=6
.
Now, add the two equation together:
-x-2y=9
4x+2y=6
-------
3x =18
x = 6 (solution for x)
.
Substitute the above back into the original top equation and solve for y:
x+2y=-9
6+2y=-9
2y=-15
y=-15/2 (solution for y)
RELATED QUESTIONS
{-x+3y=-1
{x-2y=2 BY elmination
{x+y=7
{x+3y=11 by elmination
{4x-3y=-2... (answered by Edwin McCravy)
Can you please tell me if i got these correct?
Im doing a practice test to study for my... (answered by Edwin McCravy,solver91311)
How would solve this system by addition?
2x - 4y = 7
4x - 2y =... (answered by MathLover1,checkley71,solver91311)
Im doing a practice test to study for my real test. I would like to know if i got th... (answered by MathLover1)
How do I solve this system by substitution?
-2y=-x-7... (answered by mananth)
Solve by elmination...
3x+4y=-10... (answered by msmath)
5x+3y=-11 7x-2y=19 solve by... (answered by rfadrogane)
how do you solve
4x=6-2y... (answered by solver91311,josmiceli)
How would I solve these systems?
1)x+5y=4
3x-7y=-10
2)-5x+3y=6
x-y=4
(answered by elima)