Dr. J's Maths.com
Where the techniques of Maths
are explained in simple terms.
Where the techniques of Maths
are explained in simple terms.
Algebra - Basic equations.
Test Yourself 1.
- Algebra & Number
- Calculus
- Financial Maths
- Functions & Quadratics
- Geometry
- Measurement
- Networks & Graphs
- Probability & Statistics
- Trigonometry
- Maths & beyond
- Index
| One line - 2 terms. | 1. 2x = 6
Answer.x = 3. |
2. 8x = 40
Answer.x = 5. |
| 3. 2x = 9
Answer.x = 9/2 = 4.5. |
4. 4x = 14
Answer.x = 7/2 = 3.5. |
|
| 5. 3x - 21 = 0
Answer.x = 7. |
6. 45 = 5x
Answer.x = 9. |
|
| One line - more than 2 terms. |
7. x - 9 = 21
Answer.x = 30. |
8. 5x - 4 = 16
Answer.x = 4. |
| 9. 3 + 4x = 15
Answer.x = 3. |
10. 2 - 3x = -4
Answer.x = 2. |
|
| 11. 2x - 1 = 19
Answer.x = 10. |
12. 7 + 3x = x + 13
Answer.x = 3. |
|
| 13. 8 - 3x = x + 2 - 5x
Answer.x = -6. |
14. 2 - x = 5x + 8
Answer.x = -1. |
|
| 15. x + 9 = 11x - 21
Answer.x = 3. |
16. 8x - 13 = 2x - 13
Answer.x = 0. |
|
| One line - brackets. | 17. 4( x - 7) = 2x + 10
Answer.x = 19. |
18. 5x = 2 + 3(2x - 2)
Answer.x = 4. |
| 19. 3(3x - 4) -2(1 - 2x) = -53
Answer.x = -3. |
20. 2(1 - 3x) + 4x = 2(x + 1)
Answer.x = 0. |
|
| 21. 6x - 4 = 2(4x - 1)
Answer.x = -1. |
22. 5x - 2(x + 1) = 4(x - 6)
Answer.x = 22. |
|
| Fractions - two terms. | 23. 
Answer.x = 12. |
24. 
Answer.x = 9. |
25. 
Answer.x = 9. |
26. 
Answer.x = 3/2 = 1.5. |
|
| Fractions with more than 2 terms. |
27. 
Answer.x = 7/6. |
28. 
Answer.x = 3/4 = 0.75. |
29. 
Answer.x = 6. |
30. 
Answer.x = 6. |
|
31. 
Answer.x = 1/2 = 0.5. |
32. 
Answer.x = 6. |
|
33. 
Answer.x = 16/5. |
34. 
Answer.x = 4/3. |
|
35. 
Answer.x = 5. |
36. 
Answer.x = 49/10 = 4.9. |
|
37. 
Answer.x = 22/9. |
38. 
Answer.x = 1. |
|
39. 
Answer.x = 25/28. |
40. 
Answer.x = -1/12. |