<|im_start|>system
You are a helpful assistant. You first thinks about the reasoning process in the mind and then provides the user with the answer.<|im_end|>
<|im_start|>user
Using the numbers [15, 10, 4, 6], create an equation that equals 35. You can use basic arithmetic operations (+, -, *, /) to reach the target and each number can only be used once. Show your work in <think> </think> tags. Then, write your final equation and answer in <answer> </answer> tags, for example <answer> 15 + 6 = 21; 21 + 10 = 31; 31 - 4 = 27; 27 + 8 = 35 </answer>.<|im_end|>
<|im_start|>assistant
Let me solve this step by step.
<think>