Math Problem Statement
Use the method of substitution to solve the system of linear equations.
Enter your answer as a point. Example: (2,5.5) Enter each value as a number (like 5, -3, 2.2) or as a calculation (like 5/3, 2^3, 5+4) Enter no solution for a system with no solutions. Enter infinitely many for a system with infinitely many solutions.
Solution
To solve the system of linear equations using the method of substitution, follow these steps:
- Solve one equation for one variable.
- Substitute this expression into the other equation.
- Solve the resulting equation for the other variable.
- Substitute back to find the first variable.
Let's consider the following example system of equations:
2x + 3y = 6 \\ x - y = 4 \end{cases}$$ ### Step 1: Solve one equation for one variable We solve the second equation for $$x$$: $$x - y = 4$$ $$x = y + 4$$ ### Step 2: Substitute this expression into the other equation Substitute $$x = y + 4$$ into the first equation: $$2(y + 4) + 3y = 6$$ ### Step 3: Solve the resulting equation for the other variable Simplify and solve for $$y$$: $$2y + 8 + 3y = 6$$ $$5y + 8 = 6$$ $$5y = -2$$ $$y = -\frac{2}{5}$$ ### Step 4: Substitute back to find the first variable Substitute $$y = -\frac{2}{5}$$ back into $$x = y + 4$$: $$x = -\frac{2}{5} + 4$$ $$x = -\frac{2}{5} + \frac{20}{5}$$ $$x = \frac{18}{5}$$ Thus, the solution to the system is: $$\left( \frac{18}{5}, -\frac{2}{5} \right)$$ So the solution in the format requested is: $$\left( \frac{18}{5}, -\frac{2}{5} \right)$$ Would you like more details or have any questions about this solution? Here are 5 questions you might want to ask: 1. Can you explain the substitution method in more detail? 2. How do you check if a system has no solutions? 3. What are some other methods for solving systems of linear equations? 4. How can I verify the solution to a system of linear equations? 5. What does it mean when a system has infinitely many solutions? **Tip:** When substituting expressions, carefully simplify and solve each step to avoid errors.Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Linear Equations
Substitution Method
Formulas
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Theorems
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Suitable Grade Level
Grades 9-12
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