To simplify \( 37x + 27x \), you can combine like terms.
- Start with the expression: \( 37x + 27x \).
- Add the coefficients: \( 37 + 27 = 64 \).
- Now, write it as a single term: \( 64x \).
None of the responses match \( 64x \). It seems there might be a misunderstanding or error in the options provided. If you're looking for a simplified expression, the answer is \( 64x \).