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5x + 2y = -15 2x - 2y = -6 what is the soution ?
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2 votes
5x + 2y = -15 2x - 2y = -6 what is the soution ?

User Butterflyknife
by
2.8k points

1 Answer

4 votes

Answer:

the solution is (-3, 0)

Explanation:

Find the solution using elimination by adding/subtracting:

5x + 2y = -15

2x - 2y = -6

----------------------

7x = -21 and so x = -3.

Substituting -3 for x in 2x - 2y = -6, we get:

2(-3) - 2y = -6, or

-2y = 0

Then y must be 0, and the solution is (-3, 0)

User Bochgoch
by
3.5k points
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