Problem

Translate the sentence into an inequality.
Twice the difference of a number and 9 is at least -21 .
Use the variable $y$ for the unknown number.

Answer

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Answer

The final answer is \(\boxed{2*(y - 9) \geq -21}\).

Steps

Step 1 ：Translate the sentence into an inequality: 'Twice the difference of a number and 9 is at least -21'. Use the variable y for the unknown number.

Step 2 ：The inequality is \(2*(y - 9) \geq -21\).

Step 3 ：Simplify the inequality using Python code.

Step 4 ：The final answer is \(\boxed{2*(y - 9) \geq -21}\).

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