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Find 4x xx 5y xx 7z . First find 4x xx 5...

Find `4x xx 5y xx 7z` . First find `4x xx 5y` and multiply it by 7z or first find `5y xx 7z` and multiply it by 4x: Is the result the same? What do you observe? Does the order in which you carry out the multiplication matter?

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