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Why is it important to follow the order of operations instead of solving from left to right?

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    a math expression has meaning in it, it is not just a bunch of operations. The older of operations is a set of rule that everybody will follow so that we have a solid foundation to communicate with each other so that the meaning in an expression can be delivered without distortion.

    For example:

    5-2*3

    according to the order of operation, it means the difference between 5 and the product of 2 and 3; without order of operation, it would mean3 times of the difference between 5 and 2. Totally two different meanings.

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