Solve the Addition Problem: Calculate 15 + 7

$15+7=\text{ ?}$

To solve $15 + 7$, we can simplify the calculation by using a breakdown approach. Let's follow the steps:

• First, recognize that $7$ can be split into $5 + 2$.
• Next, calculate $15 + 5$, which equals $20$.
• Then, add the remaining $2$ to the sum $20$.
• This gives us a final answer of $22$.

The correct expression that represents this process is $15+5+2$, which simplifies to $22$.

The given choices allow us to express the original problem differently. The choice that correctly represents our breakdown is:

$15+5+2$