To solve the equation \( 2x + 3 = 3x + 4 \), we can follow these steps:
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First, we want to isolate \( x \) on one side of the equation. Start by subtracting \( 2x \) from both sides:
\[ 3 = x + 4 \]
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Next, subtract \( 4 \) from both sides to isolate \( x \):
\[ 3 - 4 = x \]
\[ -1 = x \]
So, \( x = -1 \).
The correct answer is \( -1 \).