Determine whether each equation is an identity, a conditional equation, or a contradiction. Give the solution set. (1/2)(6x+20) = x+4 +2(x+3)

검증된 단계별 안내

Start by rewriting the given equation clearly: \(\frac{1}{2}(6x + 20) = x + 4 + 2(x + 3)\).

Distribute the \(\frac{1}{2}\) on the left side: \(\frac{1}{2} \times 6x + \frac{1}{2} \times 20 = 3x + 10\).

Distribute the 2 on the right side inside the parentheses: \(x + 4 + 2x + 6\).

Combine like terms on both sides: Left side is \(3x + 10\), right side is \((x + 2x) + (4 + 6) = 3x + 10\).

Compare both sides: since both simplify to \(3x + 10\), the equation holds true for all values of \(x\), indicating it is an identity with the solution set being all real numbers.

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주요 개념

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

Types of Equations: Identity, Conditional, and Contradiction

An identity is an equation true for all values of the variable, a conditional equation is true for specific values, and a contradiction has no solution. Recognizing these types helps determine the nature of the solution set.

Solving Linear Equations

Solving linear equations involves simplifying both sides, combining like terms, and isolating the variable. This process helps find the values that satisfy the equation or determine if no or all values work.

Distributive Property

The distributive property allows multiplication over addition or subtraction, such as a(b + c) = ab + ac. Applying this property correctly is essential to simplify expressions and solve equations accurately.