Math Problem Statement
3x+2y =12 and x-y =-12
Solution
We have the system of linear equations:
Let's solve this step by step using the substitution or elimination method.
Step 1: Solve the second equation for .
From the second equation:
Step 2: Substitute into the first equation.
Now, substitute into the first equation : Distribute: Combine like terms: Add 36 to both sides: Solve for :
Step 3: Substitute back into .
Now that we have , substitute this value into the expression for : Convert 12 to a fraction with denominator 5:
Solution:
The solution to the system of equations is:
Would you like further details or have any questions?
Here are 5 related questions:
- How do you solve a system of equations using the elimination method?
- Can you solve a system of equations graphically?
- What is the determinant of a system of linear equations?
- How do you solve systems with more than two equations?
- What is the significance of consistent and inconsistent systems?
Tip: Always double-check solutions by substituting them back into the original equations to verify correctness.
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Math Problem Analysis
Mathematical Concepts
Algebra
Systems of Linear Equations
Substitution Method
Formulas
Substitution method: Solve one equation for a variable and substitute into another equation
Linear equation: ax + by = c
Theorems
Basic properties of linear equations
Elimination and substitution methods
Suitable Grade Level
Grades 8-10
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