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Here are some tips for Variable Substitution, which aligns with Florida state standards:

**Variable Substitution**

Substitute and evalute the new expression.

**Example 1:**

Evaluate.

(7 +n) + 9 where n = 3Substitute n = 3 and evaluate the expression.

**Example 2:**

Evaluate.

3n- 2 where n = 5Substitute n = 5 and evaluate the expression.

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