Sagot :
ANSWERS:
1. x – 3 = 5
- x – 3 = 5
- x – 3 + 3 = 5 + 3
- x = 8
- 8 – 3 = 5
2. x + 9 = 0
- x + 9 = 0
- x + 9 – 9 = 0 – 9
- x = -9
- (-9) + 9 = 0
3. x + 12 = 64
- x + 12 = 64
- x + 12 – 12 = 64 – 12
- x = 52
- 52 + 12 = 64
4. x + 9 = 27
- x + 9 = 27
- x + 9 – 9 = 27 – 9
- x = 18
- 18 + 9 = 27
5. x – 22 = 10
- x – 22 = 10
- x – 22 + 22 = 10 + 22
- x = 32
- 32 – 22 = 10