Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Linear Equations
2:21 minutes
Problem 34a
Textbook Question
Textbook QuestionIn Exercises 15–35, solve each equation. Then state whether the equation is an identity, a conditional equation, or an inconsistent equation. 3-5(2x + 1) - 2(x-4) = 0
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Solving Linear Equations
Solving linear equations involves isolating the variable to find its value. This typically requires applying algebraic operations such as addition, subtraction, multiplication, and division to both sides of the equation. In the given equation, simplifying and combining like terms will lead to a solution for 'x'.
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Types of Equations
Equations can be classified into three types: identities, conditional equations, and inconsistent equations. An identity holds true for all values of the variable, a conditional equation is true for specific values, and an inconsistent equation has no solution. Understanding these classifications helps in interpreting the results after solving the equation.
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Combining Like Terms
Combining like terms is a fundamental algebraic technique used to simplify expressions. It involves adding or subtracting coefficients of terms that have the same variable raised to the same power. In the context of the given equation, this step is crucial for reducing the equation to a simpler form, making it easier to solve for 'x'.
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