9th Grade Solving Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 9th Grade linear equations worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Linear Equations9th Grade Solving Linear Equations Worksheet — Level 1 — Practice Set 3 — Answers
Solve each equation. Show every step and check your answer by substituting it back in.
1.x − 3 = −1
Answer: x = 2
- Add 3 to both sides
- x = −1 + 3 = 2
2.9x = 54
Answer: x = 6
- Divide both sides by 9
- x = 54 ÷ 9 = 6
3.x − 16 = −11
Answer: x = 5
- Add 16 to both sides
- x = −11 + 16 = 5
4.x + 15 = 26
Answer: x = 11
- Subtract 15 from both sides
- x = 26 − 15 = 11
5.x − 18 = −7
Answer: x = 11
- Add 18 to both sides
- x = −7 + 18 = 11
6.x − 20 = −17
Answer: x = 3
- Add 20 to both sides
- x = −17 + 20 = 3
7.x − 6 = 6
Answer: x = 12
- Add 6 to both sides
- x = 6 + 6 = 12
8.x − 20 = −8
Answer: x = 12
- Add 20 to both sides
- x = −8 + 20 = 12
9.x − 1 = 7
Answer: x = 8
- Add 1 to both sides
- x = 7 + 1 = 8
10.x − 4 = −3
Answer: x = 1
- Add 4 to both sides
- x = −3 + 4 = 1
11.x − 19 = −11
Answer: x = 8
- Add 19 to both sides
- x = −11 + 19 = 8
12.x + 5 = 15
Answer: x = 10
- Subtract 5 from both sides
- x = 15 − 5 = 10
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.