
十三分之六除以四分之十三乘九分之十三乘以四分之九除以三分之七用脱式怎么算?
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解:依题意得
6/13÷13/4×13/9×9/4÷7/3
=6/13×4/13×13/9×9/4×
3/7(约分得)
=6/13×1/1×1/1×1/1×3/7
=6/13×3/7
=18/91。
6/13÷13/4×13/9×9/4÷7/3
=6/13×4/13×13/9×9/4×
3/7(约分得)
=6/13×1/1×1/1×1/1×3/7
=6/13×3/7
=18/91。
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