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6x + y = 9 3x -4y = -18
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5 votes
6x + y = 9 3x -4y = -18

User MrKew
by
7.4k points

1 Answer

5 votes

Answer:

x = 2/3

y = 5

Explanation:

6x + y = 9

3x -4y = -18

Times the second equation by -2

6x + y = 9

-6x + 8y = 36

9y = 45

y = 5

Now put 5 in for y and solve for x

6x + 5 = 9

6x = 4

x = 2/3

Let's check

6(2/3) + 5 = 9

4 + 5 = 9

9 = 9

So, x = 2/3 and y = 5 is the correct answer.

User Sigmaxf
by
7.5k points
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