Answer:

1. x = 5

2. x = 13

3. x = 4

4. x = 0

5. x = 5

Verified answer

Answer:

To solve these equations, we want to isolate the variable (in this case, x) on one side of the equation by performing the same operation on both sides. Here are the steps to solve each equation:

• x + 4 = 9

Subtract 4 from both sides:

x + 4 - 4 = 9 - 4

x = 5

Answer: x = 5

• x + 7 = 20

Subtract 7 from both sides:

x + 7 - 7 = 20 - 7

x = 13

Answer: x = 13

• x + 8 = 12

Subtract 8 from both sides:

x + 8 - 8 = 12 - 8

x = 4

Answer: x = 4

• x + 9 = 9

Subtract 9 from both sides:

x + 9 - 9 = 9 - 9

x = 0

Answer: x = 0

• x + 2 = 7

Subtract 2 from both sides:

x + 2 - 2 = 7 - 2

x = 5

Answer: x = 5

• I hope this helps! Let me know if you have any other questions.