To simplify the expression \( 37x + 27x \), we can combine like terms.
The coefficients \( 37 \) and \( 27 \) can be added together:
\[ 37x + 27x = (37 + 27)x = 64x \]
However, the given options do not include \( 64x \). If it's a typographical issue or an oversight, please clarify.
Based on the choices, none match the simplified result \( 64x \). If you meant a different expression or if you need further assistance, please let me know!