A viral math puzzle is challenging people online with one simple-looking equation:
7 × 7 − 7 ÷ 7 + 7 = ?
At first glance, many people rush through it and get the wrong answer. The trick is remembering the order of operations.
The Rule
Multiplication and division come before addition and subtraction. When multiplication and division appear together, solve them from left to right.
Step-by-Step Solution
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