To factor the expression \(-5y + 10z\), we first identify the common factor, which is 5. We can re-write the expression as follows:
\[ -5y + 10z = 5(-y + 2z) \]
Now, we can fill in the parentheses with \(-y\) and \(2z\):
\[ (2y + 12z) - (7y + 2z) = 2y + 12z - 7y - 2z = -5y + 10z = 5(-y + 2z) \]
So, the final factored expression is:
\[ 5(-y + 2z) \]