Let shorter leg be S
Then longer leg = 2S + 2
Hypotenuse = 2S + 2 + 1, or 2S + 3
We then get:
Solve for S, the shorter leg
Add 2 to twice the value of S, and you get the longer leg
Add 3 to twice the value of S to get length of hypotenuse
That's all! It's that simple....nothing complex.