如题所述
47Ã38+47Ã23-39Ã53
=47Ãï¼38+23ï¼-39Ãï¼100-47ï¼
=47Ã61+47Ã39-39Ã100
=47Ãï¼61+39ï¼-39Ã100
=47Ã100-39Ã100
=ï¼47-39ï¼Ã100
=8Ã100
=800
=47Ãï¼38+23ï¼-39Ãï¼100-47ï¼
=47Ã61+47Ã39-39Ã100
=47Ãï¼61+39ï¼-39Ã100
=47Ã100-39Ã100
=ï¼47-39ï¼Ã100
=8Ã100
=800
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