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37 votes
Which ordered pair is a solution to the system of equations? 3x-3y=-9
2x+y=-3

User ISun
by
3.1k points

1 Answer

8 votes
8 votes

Answer: (-2, 1)

Explanation:

Let's start with the equations that we have:

3x - 3y = -9

2x + y = -3

We multiply the second equation by 3 to get:

6x + 3y = -9

Then we add this equation to the other side:
6x + 3y = -9

3x - 3y = -9

And we get:

9x = -18

So x = -2.

Now we substitute this into

2x + y = -3

-4 + y = -3

So y = 1.

So our ordered pair is (-2, 1).

(Hope I'm correct :D )

User Tyst
by
3.3k points
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