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Grade 5 pre-algebra worksheet focusing on solving basic algebraic equations.

Basic algebra worksheet for Grade 5 pre-algebra with 20 equations to solve for the variable x, from K5 Learning.

Basic algebra worksheet for Grade 5 pre-algebra with 20 equations to solve for the variable x, from K5 Learning.

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Show Answer Key & Explanations Step-by-step solution for: Solving algebraic equations worksheets | Worsheets library
Sure! Let’s solve each equation step by step and express the answer in the form “x = ___” as requested.

---

1) x + 12 = 14


Subtract 12 from both sides:
→ x = 14 - 12
x = 2

---

2) 11 + x = 15


Subtract 11 from both sides:
→ x = 15 - 11
x = 4

---

3) x - 5 = 6


Add 5 to both sides:
→ x = 6 + 5
x = 11

---

4) 2 + x = 8


Subtract 2 from both sides:
→ x = 8 - 2
x = 6

---

5) x - 3 = 2


Add 3 to both sides:
→ x = 2 + 3
x = 5

---

6) x - 6 = 6


Add 6 to both sides:
→ x = 6 + 6
x = 12

---

7) 7 + x = 14


Subtract 7 from both sides:
→ x = 14 - 7
x = 7

---

8) 12 - x = 7


Subtract 12 from both sides:
→ -x = 7 - 12 → -x = -5
Multiply both sides by -1:
x = 5

*(Alternative: Think “What number subtracted from 12 gives 7?” → 5)*

---

9) 5 + x = 9


Subtract 5 from both sides:
→ x = 9 - 5
x = 4

---

10) x - 10 = 2


Add 10 to both sides:
→ x = 2 + 10
x = 12

---

11) x + 6 = 14


Subtract 6 from both sides:
→ x = 14 - 6
x = 8

---

12) 7 + x = 10


Subtract 7 from both sides:
→ x = 10 - 7
x = 3

---

13) 10 - x = 7


Subtract 10 from both sides:
→ -x = 7 - 10 → -x = -3
Multiply by -1:
x = 3

---

14) 8 + x = 16


Subtract 8 from both sides:
→ x = 16 - 8
x = 8

---

15) x - 9 = 1


Add 9 to both sides:
→ x = 1 + 9
x = 10

---

16) x + 10 = 14


Subtract 10 from both sides:
→ x = 14 - 10
x = 4

---

17) x - 3 = 8


Add 3 to both sides:
→ x = 8 + 3
x = 11

---

18) x + 7 = 9


Subtract 7 from both sides:
→ x = 9 - 7
x = 2

---

19) x + 7 = 19


Subtract 7 from both sides:
→ x = 19 - 7
x = 12

---

20) x + 2 = 10


Subtract 2 from both sides:
→ x = 10 - 2
x = 8

---

## Final Answers (in order):

1) x = 2
2) x = 4
3) x = 11
4) x = 6
5) x = 5
6) x = 12
7) x = 7
8) x = 5
9) x = 4
10) x = 12
11) x = 8
12) x = 3
13) x = 3
14) x = 8
15) x = 10
16) x = 4
17) x = 11
18) x = 2
19) x = 12
20) x = 8

---

## 📌 Key Strategy:
To solve for x, isolate it on one side of the equation by doing the opposite operation to what is being done to it:

- If something is added to x → subtract it from both sides.
- If something is subtracted from x → add it to both sides.
- If x is being subtracted (like 10 - x), rearrange or use inverse operations carefully.

You’re basically “undoing” the math around x to find its value!

Let me know if you’d like a visual explanation or practice more problems 😊
Parent Tip: Review the logic above to help your child master the concept of solve for variable worksheet.
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