Solve the following algebraic expression.
7x + 12 = 15
7x + 12 = 15
7x = 3
x = 3/7
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Solve the following algebraic expression.

### Response:
7x + 12 = 15
7x = 3
x = 3/7