Year 9 Simplifying Expressions (Like Terms) Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 9 algebraic expressions worksheet.
Year 9 Simplifying Expressions (Like Terms) Worksheet — Level 1 — Practice Set 2 — Answers
Collect the like terms. Only terms with exactly the same letter and power can be added.
1.Simplify: 6x + 2x + 2
Answer: 8x + 2
- 6x + 2x = 8x
2.Simplify: −3x + 2x + 4
Answer: −x + 4
- −3x + 2x = −x
3.Simplify: −6x + 5x + 2
Answer: −x + 2
- −6x + 5x = −x
4.Simplify: 8x − x + 6
Answer: 7x + 6
- 8x − x = 7x
5.Simplify: 8x + 9x + 8
Answer: 17x + 8
- 8x + 9x = 17x
6.Simplify: 5x − 6x + 6
Answer: −x + 6
- 5x − 6x = −x
7.Simplify: −4x + 3x + 7
Answer: −x + 7
- −4x + 3x = −x
8.Simplify: −3x + 4x + 3
Answer: x + 3
- −3x + 4x = x
9.Simplify: −4x − 6x + 7
Answer: −10x + 7
- −4x − 6x = −10x
10.Simplify: x + 9x + 9
Answer: 10x + 9
- x + 9x = 10x
11.Simplify: 2x + 8x + 6
Answer: 10x + 6
- 2x + 8x = 10x
12.Simplify: 7x − 5x + 6
Answer: 2x + 6
- 7x − 5x = 2x
13.Simplify: 5x + x + 5
Answer: 6x + 5
- 5x + x = 6x
14.Simplify: −2x + x + 9
Answer: −x + 9
- −2x + x = −x
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.