Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
Gabriel is 3 years younger than Frank. The current total of their ages right now is 17. What is Frank's age?

### Response:
Total age of Gabriel and Frank should add up to 17. So let X be Frank's age.
Gabriel is 3 years younger, so Gabriel's age is X - 3.
The total age of Gabriel and Frank is X + X - 3 = 17.
2X = 17 + 3.
2X = 20.
X = <<10=10>>10.
So, Frank is X = <<10=10>>10 years old.
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