Math Problem Statement
2x+ 3y = 16 3x + 2y = 15 solve this equation by elimination
Solution
To solve the system of linear equations using the elimination method, we will:
- Eliminate one variable by multiplying the equations so that their coefficients align for one of the variables.
- Subtract or add the equations to eliminate that variable.
- Solve for the remaining variable.
- Substitute the value of the found variable into one of the original equations to find the second variable.
The system of equations is:
Step 1: Make the coefficients of or equal
Let's eliminate . To do this, we'll multiply the first equation by 3 and the second equation by 2 to align the coefficients of .
Multiply (1) by 3:
Multiply (2) by 2:
Step 2: Subtract the equations to eliminate
Now subtract equation (4) from equation (3): This simplifies to: Solve for :
Step 3: Substitute the value of into one of the original equations
Substitute into equation (1): Solve for :
Final Solution:
Do you want more details, or do you have any questions?
Here are 5 related questions:
- How would you solve the system by substitution instead of elimination?
- Can you apply elimination to non-linear systems of equations?
- What happens if the system has no solutions or infinitely many solutions?
- How do you interpret the geometric meaning of the solution for these linear equations?
- How can you solve a system of three variables using elimination?
Tip: Always check your solution by plugging the values back into the original equations to ensure accuracy.
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Systems of Equations
Elimination Method
Formulas
Multiplying equations to align coefficients
Elimination: (a1x + b1y = c1) - (a2x + b2y = c2)
Solving a single-variable equation
Theorems
Elimination Method for Solving Linear Systems
Suitable Grade Level
Grades 8-10
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