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Solve this system of equations by using the elimination method. x+4y=9 2x-4y=-6

1 Answer

6 votes

Answer:


x=6

y=(3)/(4)

Explanation:

Given the following question:


x+4y=9

2x-4y=9

To solve using the elimination method we will add the two equations together to find the two individual values.


x+2x=3x

4y-4y=0

9+9=18

3x=18

(3x)/(3) =x

18/3=6

x=6


x+4y=9
Substitute six in for x:

x=6

6+4y=9
Solve for y:

6-6=0

9-6=3

(4y)/(4) =y

3=(3)/(4)

y=(3)/(4)

x is equal to 6, and y is equal to 3/4.

Hope this helps.

User Stephen Brickner
by
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