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Jin Dian is in the third grade of mathematics.
Judging from the meaning of the question:

Negative-negative = difference

The minuend is more than the minuend 186, that is, the difference =186;

The difference of the minuend ratio is 138, that is, the minuend-difference = minus =138;

And the minuend = subtraction+difference = 138+ 186=324.

Taian Jin Dian Education answers for you!

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