Convert the following equation into a word problem.
2x + 3 = 7
Sarah has 2 apples, and her friend gives her 3 more. Now she has a total of 7 apples. How many apples did Sarah have at first?
Complete the following task based on the instruction and optional input provided.### Instruction:
Convert the following equation into a word problem.

### Input:
2x + 3 = 7

### Output:
Sarah has 2 apples, and her friend gives her 3 more. Now she has a total of 7 apples. How many apples did Sarah have at first?