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QuestionMathematics

Solve the inequality: 3x ≥ 12 Rearrange it so that x comes first.
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Answer

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Step 1:
I'll solve this step-by-step using the precise LaTeX formatting guidelines:

Step 2:
: Identify the original inequality

The original inequality is $$3x \geq 12

Step 3:
: Isolate x by dividing both sides by 3

\frac{3x}{3} \geq \frac{12}{3}
To solve for x, divide both sides of the inequality by 3:

Step 4:
: Simplify the inequality

x \geq 4

Step 5:
: Check the solution

- We divided by a positive number (3), so the inequality direction remains the same - The solution means all real numbers greater than or equal to 4 satisfy the original inequality

Final Answer

Key Insights: - When solving inequalities, divide or multiply both sides by the same number - If dividing by a positive number, the inequality sign remains unchanged - The solution represents all numbers on the number line from 4 to positive infinity