1. **Stating the problem:** Simplify and solve the first equation: $3x + 3 - 2x + 7 = $ ? 2. **Combine like terms:** Group the $x$ terms and constants separately. $$3x - 2x + 3 + 7 = x + 10$$ 3. **Simplify:** $$x + 10$$ 4. **Final answer:** The simplified expression is $x + 10$. This completes the solution for the first equation. Note: The user provided multiple equations, but per instructions, only the first problem is solved here.