Respect left-to-right for multiplication/division Evaluate: 7 + 7 ÷ 7 * 7 (do division, then multiplication, then addition).

Introduction / Context: This classic trap checks whether you apply the left-to-right rule for multiplication and division of equal precedence before doing any addition. Doing it correctly yields an integer result without ambiguity.

Given Data / Assumptions:

• Expression: 7 + 7 ÷ 7 * 7.
• Division and multiplication have equal precedence; evaluate left to right.
• Addition is done last.

Concept / Approach: First compute 7 ÷ 7, then multiply the result by 7, and finally add the leading 7. This prevents the common mistake of adding first or multiplying 7*7 first.

Step-by-Step Solution:7 ÷ 7 = 1.1 * 7 = 7.Now add: 7 + 7 = 14.So the value is 14.

Verification / Alternative check: Insert parentheses to mirror precedence: 7 + ((7 ÷ 7) * 7) = 7 + (1 * 7) = 14, matching the left-to-right rule for equal-precedence ops.

Why Other Options Are Wrong:42 comes from multiplying 7*7 first to get 49, then adding 7 and dividing by 7 unsystematically.71/7 or 2/7 reflect mishandled grouping or treating the entire expression as a single fraction.

Common Pitfalls: Violating left-to-right for * and ÷; distributing the 7 incorrectly; or treating 7 + 7 ÷ 7 as (7 + 7)/7 by mistake.

Final Answer: 14