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I'm marking answers as brainliest. When solving this system using elimination you should _______________. 6x - 9y = 21, 3x + y = 5 Multiply the second equation by 2. Solve the second equation for y. Set the equations equal to each other. Multiply the second equation by 9.

Respuesta :

mathstudent55

Answer:

Multiply the second equation by 9.

Step-by-step explanation:

To use the elimination method, you need to be able to add the equations and have one variable add to zero. That way you eliminate that variable.

The first equation has -9y. The second equation has y. If you multiply the second equation by 9, you will have 9y in the second equation. Then when you add equations, you will add -9y and 9y and will eliminate y.

Answer: Multiply the second equation by 9.

meredith48034

Answer:

Step-by-step explanation:

6x - 9y = 21

-6x -2y = -10

-11y = 11

y = -1

3x - 1 = 5

3x = 6

x = 2

(2, -1)

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