1. **State the problem:** Simplify the expression $2\frac{a}{b}5 - \sqrt{x}5$. 2. **Rewrite the expression:** The term $2\frac{a}{b}5$ means $2 \times \frac{a}{b} \times 5$. 3. **Multiply constants:** Multiply $2$ and $5$ first: $$2 \times 5 = 10$$ 4. **Rewrite the expression:** Now the expression is: $$10 \times \frac{a}{b} - 5 \times \sqrt{x}$$ 5. **Write the expression clearly:** $$\frac{10a}{b} - 5\sqrt{x}$$ 6. **Final simplified form:** $$\boxed{\frac{10a}{b} - 5\sqrt{x}}$$ This is the simplified form of the given expression.