1. **State the problem:** Simplify the expression $p2-100 + p + 10$. 2. **Rewrite the expression clearly:** The expression is $p2 - 100 + p + 10$. Assuming $p2$ means $2p$, the expression becomes $2p - 100 + p + 10$. 3. **Combine like terms:** Combine the terms with $p$ and the constant terms separately. $$2p + p = 3p$$ $$-100 + 10 = -90$$ 4. **Write the simplified expression:** $$3p - 90$$ 5. **Explanation:** We combined the coefficients of $p$ by adding $2p$ and $p$ to get $3p$. Then, we combined the constants $-100$ and $10$ to get $-90$. The simplified expression is $3p - 90$. **Final answer:** $3p - 90$