14x+21y

The expression \(14x + 21y\) can be simplified by factoring out the greatest common factor (GCF).

The GCF of the coefficients 14 and 21 is 7. Therefore, you can factor the expression as follows:

\[ 14x + 21y = 7(2x + 3y) \]

This gives you the factored form of the expression. If you have any specific questions or need further assistance, feel free to ask!