Year 9 Simplifying Expressions (Like Terms) Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 9 algebraic expressions worksheet.
Year 9 Simplifying Expressions (Like Terms) Worksheet — Level 1 — Answers
Collect the like terms. Only terms with exactly the same letter and power can be added.
1.Simplify: 9x − 6x + 7
Answer: 3x + 7
- 9x − 6x = 3x
2.Simplify: −5x − 5x + 1
Answer: −10x + 1
- −5x − 5x = −10x
3.Simplify: 5x − 5x + 5
Answer: 5
- 5x − 5x = 0
4.Simplify: −6x − 5x + 2
Answer: −11x + 2
- −6x − 5x = −11x
5.Simplify: −x − 6x + 1
Answer: −7x + 1
- −x − 6x = −7x
6.Simplify: 3x + 4x + 7
Answer: 7x + 7
- 3x + 4x = 7x
7.Simplify: 9x − 4x + 7
Answer: 5x + 7
- 9x − 4x = 5x
8.Simplify: −3x + 2x + 8
Answer: −x + 8
- −3x + 2x = −x
9.Simplify: 7x − 6x + 5
Answer: x + 5
- 7x − 6x = x
10.Simplify: −6x + 7x + 3
Answer: x + 3
- −6x + 7x = x
11.Simplify: 4x + 6x + 9
Answer: 10x + 9
- 4x + 6x = 10x
12.Simplify: 6x + 2x + 5
Answer: 8x + 5
- 6x + 2x = 8x
13.Simplify: x − 2x + 6
Answer: −x + 6
- x − 2x = −x
14.Simplify: −3x − x + 7
Answer: −4x + 7
- −3x − x = −4x
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
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