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5 votes
How would you solve 3x + y = -14

-2x + y = 9
while showing all of the work

2 Answers

4 votes

Answer:


x= (-23)/(5), y=(-1)/(5)

Explanation:

3x + y = -14

-2x + y = 9

We'll try to find x

(-2x + y = 9) multiplied by -1 => -1(-2x+y=9) = 2x-y = -9

3x + y = -14

+2x -y = -9

+__________

3x + 2x +y -y = -14 - 9

5x = -23

x = -23/5

3x + y = -14 =>And now we can find y. Just plug in -23/5 for x


3(-23)/(5) + y = -14


(-69)/(5) + (5y)/(5) = (-70)/(5)


(5y)/(5) =(-1)/(5)

5y = -1

y = -1/5

Hope this helps ^-^

5 votes

Answer:

X=


( - 23)/(5)

Y=


( - 1)/(5)

Explanation:

3x+y=-14

2x-y=-9

5x=-23

y=

User Dreaded Harvester
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