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Exercise 2 Direction:

Find the value of the unknown in each equation.

1. x = -3

• x + 6 = 3
• x = 3 - 6
• x = -3

2. x = 32

• x - 10 = 22
• x = 22 + 10
• x = 32

3. x = 45

• x − 27 = 8 + 10
• x − 27 = 18
• x = 18 + 27
• x = 45

4. x = 84

• −11 + x + (−48) = 25
• −59 + x = 25
• x = 25 + 59
• x = 84

5. x = 9

• x − (−16) = 12 + 13
• x + 16 = 12 + 13
• x + 16 = 25
• x = 25 - 16
• x = 9

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Answer:

1. -3

2. -12

3. 45

4. 84

5. 9