Decide whether each statement is true or false. The equation 5x=4x is an example of a contradiction.

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Recall that a contradiction is an equation that has no solution, meaning it is never true for any value of the variable.

Start with the given equation: $5x = 4x$.

Subtract \$4x$ from both sides to isolate the variable terms on one side: $5x - 4x = 4x - 4x$.

Simplify both sides: $x = 0$.

Since the equation simplifies to $x = 0$, which is a specific solution, the equation is not a contradiction because it has at least one solution.

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영상 길이:

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Equation and Solution

An equation is a mathematical statement asserting the equality of two expressions. Solving an equation involves finding all values of the variable that make the equation true. Understanding what it means for an equation to have solutions is fundamental to analyzing its nature.

Contradiction in Equations

A contradiction is an equation that has no solution because it leads to a false statement, such as 0 = 5. Recognizing contradictions helps determine when an equation cannot be satisfied by any value of the variable.

Simplifying and Comparing Expressions

Simplifying both sides of an equation by combining like terms or performing operations helps reveal the true nature of the equation. For example, simplifying 5x = 4x leads to x = 0, showing whether the equation is always true, false, or conditional.