Math Problem Statement
solve x − 5z = y 2x = 3y + z − 6 4y − 2z = 7 − 7x
Solution
We have the following system of three equations with three variables:
Step 1: Express from the first equation
From equation (1):
We can solve for :
Step 2: Substitute into the other two equations
Substitution into equation (2):
Substitute : Simplify: Subtract from both sides: Multiply by :
Step 3: Substitute into
From equation (1):
Substitute :
Simplify:
Step 4: Substitute and into equation (3)
The third equation is: Substitute and : Simplify both sides: Move all terms involving to one side: Solve for :
Step 5: Solve for and
Now, substitute into and :
Solve for :
Simplify:
Solve for :
Simplify:
Final Solution:
Would you like any details or have any questions about the steps?
Here are 5 related questions to deepen your understanding:
- How would the solution change if the constant terms in each equation were different?
- Can you solve the system using matrix methods, such as Gaussian elimination?
- How can this solution be verified by substitution into the original equations?
- What geometric interpretation can be derived from solving this system of equations?
- How would the solution change if the system was dependent or inconsistent?
Tip: When solving systems of equations, always try to simplify one equation to express one variable, then substitute it into others to reduce complexity.
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Math Problem Analysis
Mathematical Concepts
Systems of Equations
Substitution Method
Linear Equations
Formulas
x - 5z = y
2x = 3y + z - 6
4y - 2z = 7 - 7x
Theorems
Linear Algebra Methods
Substitution Principle
Suitable Grade Level
Grades 10-12
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