1
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
We have that $2a + 1 = 1$ and $b - a = 1.$ What is the value of $b$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
1
We have that $2a + 1 = 1$ and $b - a = 1.$ What is the value of $b$?
train