To solve the equation \( 150 = 200 - 10h \), we start by isolating \( h \).
- Subtract 200 from both sides:
\[ 150 - 200 = -10h \]
This simplifies to:
\[ -50 = -10h \]
- Next, divide both sides by -10:
\[ h = \frac{-50}{-10} \]
This simplifies to:
\[ h = 5 \]
So the solution is:
\[ h = 5 \]