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Elodia [21]
2 years ago
8

Due in an hour! hour​

Mathematics
2 answers:
VLD [36.1K]2 years ago
5 0

Answer:

Step-by-step explanation:

Hope this helps u !!

Lady_Fox [76]2 years ago
3 0

Answer:

( 1 , 2 )

Step-by-step explanation:

x + 4y = 9

x = 9 - 4y .... ( 1)

2x - 4y = -6 ...( 2)

substitute the 9 - 4y as x in the second equation

<u>2( 9 - 4y )</u> - 4y = -6

distribute 2

18 <u>- 8y - 4y</u> = -6

combine like terms

18 - 12y = -6

Subtract 18 from both sides

<u>18 - 18</u> - 12y = <u>-6 - 18</u>

- 12y = - 24

divide both sides by -12

<u>-12y / -12</u> = <u>-24/-12</u>

y = 2

Now , substitute the 2 as y in the second equation

2x - 4y = -6

2x - 4 ( 2 ) = -6

2x - 8 = -6

add 8 to both sides

2x<u> - 8 + 8</u> =<u> -6 + 8</u>

2x = 2

divide both sides by 2

2x / 2 = 2/2

x = 1.

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