How do you solve the system of equations using elimination: 3x + 4y = 9 and 3x + 2y = 9?

To solve this system of equations using the elimination method, we start by writing the two equations clearly:

  • Equation 1: 3x + 4y = 9
  • Equation 2: 3x + 2y = 9

Next, we notice that both equations have the term 3x. To eliminate x from the equations, we can subtract Equation 2 from Equation 1:

Subtracting Equation 2 from Equation 1:

  (3x + 4y) - (3x + 2y) = 9 - 9

This simplifies to:

  4y - 2y = 0

Which gives us:

  2y = 0

Now, we can solve for y:

  y = 0

Now that we have the value of y, we can substitute it back into one of the original equations to find x. We’ll use Equation 2 for this:

  3x + 2(0) = 9

This simplifies to:

  3x = 9

Now, divide both sides by 3:

  x = 3

So, the solution to the system of equations is:

(x, y) = (3, 0)

In conclusion, by using the elimination method, we found that the solution to the system of equations is x = 3 and y = 0.

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