1. **State the problem:** Evaluate the expression $$(2 \times 6 + 3 - 4) - 5 + \left(\frac{20}{5}\right) \times 3 + 50$$ using order of operations. 2. **Recall order of operations:** Parentheses first, then multiplication and division (left to right), then addition and subtraction (left to right). 3. **Evaluate inside parentheses:** - Calculate $2 \times 6 = 12$ - Then $12 + 3 = 15$ - Then $15 - 4 = 11$ 4. **Evaluate division inside parentheses:** - Calculate $\frac{20}{5} = 4$ 5. **Multiply:** - $4 \times 3 = 12$ 6. **Substitute back and simplify:** - Expression becomes $11 - 5 + 12 + 50$ 7. **Perform addition and subtraction left to right:** - $11 - 5 = 6$ - $6 + 12 = 18$ - $18 + 50 = 68$ **Final answer:** $68$