Math Problem Statement
solve this by elimination 1: 3x +4y = -3 and 2x + 6y = 8
Solution
We can solve the system of equations by elimination.
The system of equations is:
Step 1: Multiply the equations
We want to eliminate one variable, so we need to manipulate the equations. First, multiply both equations by factors that make the coefficients of or the same.
To eliminate , we can multiply:
- The first equation by 2:
- The second equation by 3:
This gives:
Step 2: Subtract the equations
Now, subtract equation 1 from equation 2 to eliminate :
This simplifies to:
Step 3: Solve for
Step 4: Substitute back into one of the original equations
Now, substitute into one of the original equations (let's use the first one):
Final Solution:
The solution is:
Would you like further details on this process or have any questions?
Here are 5 related questions to expand on this:
- Can you solve a similar system of equations with different coefficients using elimination?
- How would you approach this problem if the coefficients of were the same initially?
- What happens if both equations are multiples of each other? How would you solve such a system?
- Can you use substitution instead of elimination for this system? What would be the steps?
- How can you verify that the solution is correct?
Tip: Always double-check your final answer by plugging the values of and back into the original equations to verify their correctness.
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Math Problem Analysis
Mathematical Concepts
Algebra
System of Linear Equations
Elimination Method
Formulas
Elimination of variables by subtraction or addition of equations
Theorems
Properties of Equality
Linear Combinations in Systems of Equations
Suitable Grade Level
Grades 8-10
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