Quote:
Originally Posted by Spy228  You are correct, but then fail follow those rules correctly. The reason each pair is interchangeable is because neither operation has priority over each other. Therefore, the equation is calculated left to right. It is incorrect to start in the middle or right hand side of the equation just like it is incorrect to start reading an english word from the middle or right. Only one solution. |
This is the way we learned it in Algebra 10, 11, and 12, and Geometry 12, and Physics 11 and 12... granted that was over 25 years ago, but I don't recall hearing anything about the rules of mathematics changing since then.
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