Math Problem Statement
Find the solution of the system of equations -5x+2y=-11 and -x+2y=-7
Solution
We are given the system of linear equations:
We can solve this system using the elimination method or the substitution method. I'll use the elimination method here, focusing on eliminating one variable to solve for the other.
Step 1: Subtract the second equation from the first equation
Since both equations have the same coefficient for (i.e., ), we can subtract the second equation from the first to eliminate .
Simplifying:
This simplifies to:
Step 2: Solve for
Now, divide both sides of the equation by :
Step 3: Substitute the value of into one of the original equations
Substitute into the second equation:
Substitute :
Simplifying:
Add 1 to both sides:
Now, divide by 2:
Final Solution:
The solution to the system of equations is:
Let me know if you need further details or clarifications.
Related Questions:
- How would you solve the system using the substitution method?
- Can the system be solved graphically? If so, what would the intersection point be?
- What happens if both equations represent the same line? How do we handle that?
- Can we apply matrix methods (like Gauss-Jordan elimination) to solve this system?
- How do we determine if a system of equations has no solution or infinitely many solutions?
Tip: Always check your solution by substituting the values back into the original equations!
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Systems of Equations
Elimination Method
Formulas
Standard form of a linear equation: Ax + By = C
Elimination method for solving systems of linear equations
Theorems
No specific theorems, general algebraic methods used
Suitable Grade Level
Grades 8-10
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