Let's simplify each algebraic expression and match them with their correct simplified forms:
1. **Expression:** \(3m + t - m + 2t\)
**Simplification:**
\(3m - m + t + 2t = 2m + 3t\)
2. **Expression:** \(4m - 2t + 2m - t\)
**Simplification:**
\(4m + 2m - 2t - t = 6m - 3t\)
3. **Expression:** \(-2m + 3t - 2m - t\)
**Simplification:**
\(-2m - 2m + 3t - t = -4m + 2t\)
So the simplified forms are:
- \(3m + t - m + 2t\) simplifies to **\(2m + 3t\)**.
- \(4m - 2t + 2m - t\) simplifies to **\(6m - 3t\)**.
- \(-2m + 3t - 2m - t\) simplifies to **\(-4m + 2t\)**.
You can insert the simplified forms accordingly.