Math Problem Statement
3 x + 2 y
8 5 x + 2 y
12
What is the solution of the system of equations shown above? A. ( − 2 , 7 ) B. ( 2 , 1 ) C. ( 4 3 , 2 ) D. ( 2 , 4 )
Solution
We are given the system of linear equations:
To solve this system, we can use the elimination method. Let's eliminate by subtracting the first equation from the second equation:
Simplifying:
Solving for :
Now substitute into either of the original equations. Let's use the first equation:
Substitute :
Now solve for :
Thus, the solution is .
Answer: B. (2, 1)
Do you want a more detailed explanation of the elimination method or have any other questions? Here are some related questions to explore:
- How would you solve this system using substitution instead of elimination?
- What happens if we have three variables instead of two in a system of equations?
- Can this system be solved using matrices? How?
- What are some special types of systems of equations (e.g., dependent, inconsistent)?
- How can you verify the solution by substituting back into both equations?
Tip: The elimination method works best when the coefficients of one variable are the same or easily manipulated to be the same across the equations.
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Algebra
Linear Equations
Elimination Method
Formulas
Elimination method: Subtract equations to eliminate one variable
Theorems
Solving systems of linear equations
Suitable Grade Level
Grades 7-9
Related Recommendation
Solving Systems of Equations using Elimination: 3x + 2y = 8, 5x + 2y = 12
Solve the System of Linear Equations: 3x + y = 8, 5x + y = 10 Using Elimination Method
Solving a System of Linear Equations Using Elimination: 2x - 3y = 8, 4x - y = 6
Solving the System of Linear Equations: 2x + 3y = 12, 4x - y = 5
Solving a System of Linear Equations Using the Elimination Method