I can summarize: The equation is ambiguous, because there are two equally valid ways to interpret the relationship between the 2 and the parentheses. Pre-computer written math would have assumed that the 2(x) was a unit, as the 2 could be distributed across the parenthetical expression. With the advent of calculators and computers, equations written this way are executed left to right, and so the 8 ÷ 2 would go first, and then that result would be multiplied by the result of the parentheses.

It's worth noting that both interpretations follow the PEMDAS rule, so such debates are irrelevant. It is a question of grouping terms and solving the holistic equation, vs solving step by step left to right.