To solve the inequalities \( x + 2 \geq 6 \) and \( 3x \geq 6 \), we will solve each inequality separately.
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Solve the first inequality:
\[ x + 2 \geq 6 \]
Subtract 2 from both sides:
\[ x \geq 4 \]
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Solve the second inequality:
\[ 3x \geq 6 \]
Divide both sides by 3:
\[ x \geq 2 \]
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Find the solution set:
The first inequality gives us \( x \geq 4 \), and the second gives us \( x \geq 2 \).
The solution set that satisfies both inequalities is the more restrictive condition, which is \( x \geq 4 \).
Thus, the final solution set is
\[ \boxed{[4, \infty)} \]