Solve each equation. Then state whether the equation is an identity, a conditional equation, or an inconsistent equation. 7(x-4) = x + 2
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
1. Equations & Inequalities
Rational Equations
Problem 27
Textbook Question
Solve each equation. Then state whether the equation is an identity, a conditional equation, or an inconsistent equation. (3x+1)/3 - 13/2 = (1-x)/4
Verified step by step guidance1
Start by writing down the given equation: \(\frac{3x+1}{3} - \frac{13}{2} = \frac{1 - x}{4}\).
To eliminate the fractions, find the least common denominator (LCD) of 3, 2, and 4, which is 12. Multiply every term on both sides of the equation by 12 to clear the denominators.
Distribute 12 to each term: \$12 \times \frac{3x+1}{3} - 12 \times \frac{13}{2} = 12 \times \frac{1 - x}{4}$.
Simplify each term after multiplication: \$4(3x+1) - 6(13) = 3(1 - x)$.
Now, expand the parentheses and solve the resulting linear equation for \(x\). After finding \(x\), check if the solution satisfies the original equation to determine if it is an identity, conditional, or inconsistent equation.
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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 on one side to find its value. This often requires clearing fractions by finding a common denominator or multiplying both sides by the least common multiple. Understanding how to manipulate equations step-by-step is essential to find the solution accurately.
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Types of Equations: Identity, Conditional, and Inconsistent
An identity is true for all values of the variable, a conditional equation is true for specific values, and an inconsistent equation has no solution. Recognizing these types helps interpret the solution set after solving the equation, indicating whether the equation holds universally, sometimes, or never.
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Working with Rational Expressions
Rational expressions are fractions with polynomials in the numerator and denominator. Solving equations involving them requires careful handling of denominators to avoid division by zero and to simplify expressions correctly. Clearing denominators by multiplying through is a common strategy to simplify the equation.
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Rationalizing Denominators
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