Practice solving for x with these one-step algebra problems involving basic arithmetic operations.

We are given a list of 12 simple algebra equations (numbered 3 to 14). The task is to solve each one for the variable x.

Let’s go through them one by one, solving carefully.

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3) x – 3 = 11
Add 3 to both sides:
x = 11 + 3 → x = 14

4) x – 5 = 7
Add 5 to both sides:
x = 7 + 5 → x = 12

5) 2x = 10
Divide both sides by 2:
x = 10 ÷ 2 → x = 5

6) x/6 = 2
Multiply both sides by 6:
x = 2 × 6 → x = 12

7) 3x = 15
Divide both sides by 3:
x = 15 ÷ 3 → x = 5

8) 4x = 12
Divide both sides by 4:
x = 12 ÷ 4 → x = 3

9) x/4 = 10
Multiply both sides by 4:
x = 10 × 4 → x = 40

10) x – 7 = 13
Add 7 to both sides:
x = 13 + 7 → x = 20

11) x + 6 = 15
Subtract 6 from both sides:
x = 15 – 6 → x = 9

12) 4 + x = 9
Subtract 4 from both sides:
x = 9 – 4 → x = 5

13) 7 = x – 6
Add 6 to both sides:
7 + 6 = x → x = 13

14) 14 = x + 5
Subtract 5 from both sides:
14 – 5 = x → x = 9

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All calculations checked. All answers are correct.

Final Answer:
3) 14
4) 12
5) 5
6) 12
7) 5
8) 3
9) 40
10) 20
11) 9
12) 5
13) 13
14) 9