Solve Addition Problem: 33 + 9 = ?

To solve the expression $33 + 9$ by breaking down $9$, follow these steps:

• Step 1: Decompose $9$ into $7 + 2$.
• Step 2: First, add $33 + 7$. This gives you $40$.
• Step 3: Next, add the remaining part of $9$, which is $2$, to $40$.
• Step 4: The result of $40 + 2$ is $42$.

Thus, the detailed decomposition to match the answer format is: $33 + 7 + 2$.