SavannahGrace06idn
Answered

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solve this system of equations using the elimination method.
3x + 9y = 21
-3x - 4y = 4

Sagot :

Shayaanibrahimbaigidn

Answer:

y = 5

Step-by-step explanation:

In order for an elimination to take place you have to eliminate a variable, in this situation the x variable can be eliminated,

(1). 3x + 9y = 21

     -3x - 4y = 4

             5y = 25

As you can see the x is eliminated.

Now we have to solve this,

(2). 5y = 25

      5y/5 = 25/5

           y = 5

So the answer is y = 5

Answer:

25,5

Step-by-step explanation:

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