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Decide Whether the Equation Is an Identity, a Conditional Equation $- 8 x - 42 + 2 ( 4 x + 23 ) = 0$

Question 470

Question 470

Multiple Choice

Decide whether the equation is an identity, a conditional equation, or a contradiction. Give the solution set.
- $- 8 x - 42 + 2 ( 4 x + 23 ) = 0$

A) Contradiction; $\varnothing$
B) Conditional; $\{ 4 \}$
C) Identity; $\{$ all real numbers $\}$
D) Conditional; $\{ 1 \}$

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