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Use elimination to solve the system of equations given by (3x - 2y = 12) and (3x + 5y = 33).

A. no solution
B. (6,3)
C. infinitely many solutions
D. (14,15)

1 Answer

5 votes

Final answer:

The solution to the system of equations (3x - 2y = 12) and (3x + 5y = 33) is found using elimination, resulting in the point (6,3), which is option B.

Step-by-step explanation:

To solve the system of equations using elimination, we look at the given equations (3x - 2y = 12) and (3x + 5y = 33). The goal is to eliminate one of the variables by combining the equations. We can do this by first multiplying the first equation by 5 and the second equation by 2, which gives us:

  • 15x - 10y = 60
  • 6x + 10y = 66

Next, we add the equations together to eliminate the y variable:

  • 15x + 6x - 10y + 10y = 60 + 66
  • 21x = 126

Dividing both sides by 21, we find that x = 6. Now, we can substitute x back into one of the original equations to find y. Using the first equation 3x - 2y = 12:

  • 3(6) - 2y = 12
  • 18 - 2y = 12
  • -2y = -6
  • y = 3

Therefore, the solution to the system of equations is (6,3), which corresponds to option B.

User Alberto Perrella
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