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Identify the Property used to go from Line 2 to Line 3: Subtraction Property of Equality
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Which line has a mistake? Line 4
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What should have been the correct answer for the equation? \( x = 5 \)
To clarify, the correct solution to the equation \( x + 2(x + 1) = 17 \) should simplify to \( x + 2x + 2 = 17 \), leading to \( 3x + 2 = 17 \), and then correctly solving gives \( 3x = 15 \), so \( x = 5 \).