Math Problem Statement
Solve the system of equations: 3x - y = 7, 2x + y = 3
Solution
We are tasked with solving the system of equations shown in the image:
Step 1: Add the equations
We can eliminate by adding both equations together:
This simplifies to:
Step 2: Solve for
Step 3: Substitute into one of the original equations
Let's substitute it into Equation 1:
Solution:
The solution to the system is .
Thus, the correct answer is (2, -1).
Would you like more details on any part of the process?
Here are some related questions you might find helpful:
- What are some methods to solve a system of equations?
- How does the substitution method differ from elimination?
- Can all systems of linear equations be solved by elimination?
- What are some cases where a system of equations has no solution?
- How can you graphically represent the solution to this system?
Tip: When solving systems of equations, the elimination method is often quicker when the coefficients of one variable are already opposites, like in this example!
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Math Problem Analysis
Mathematical Concepts
Algebra
System of Linear Equations
Formulas
3x - y = 7
2x + y = 3
Theorems
Elimination method for solving systems of equations
Suitable Grade Level
Grades 8-10