# Worksheet: Evaluating Addition and Subtraction Expressions

In this worksheet, we will practice evaluating an algebraic expression at a specific value using addition and subtraction operations.

**Q1: **

Given that and , evaluate . Write the answer in its simplest form.

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**Q2: **

Given that , evaluate .

**Q3: **

Determine the value of the expression , given that and .

**Q4: **

Determine the value of the expression , given that and .

**Q5: **

Evaluate , given that and .

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**Q6: **

Evaluate if and .

**Q7: **

Evaluate , given that and .

**Q8: **

Evaluate if and .

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**Q9: **

Evaluate , given that and .

**Q10: **

Given that and , find the value of .

**Q12: **

Evaluate if , , and .