十二分之五除以四分之九加一百一十二分之七乘以九分之四简便运算?
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回答:
5/12÷9/4+7/112×4/9
=5/12×4/9+7/112×4/9
=4/9×(5/12+7/112)
=4/9×161/336
=161/756
5/12÷9/4+7/112×4/9
=5/12×4/9+7/112×4/9
=4/9×(5/12+7/112)
=4/9×161/336
=161/756
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5/12÷9/4+7/112×4/9
=5/12×4/9+7/112×4/9
=(5/12+7/112)×4/9
=(5/12+1/16)×4/9
=(20/48+3/48)×4/9
=23/48×4/9
=23/12×1/9
=23/108
=5/12×4/9+7/112×4/9
=(5/12+7/112)×4/9
=(5/12+1/16)×4/9
=(20/48+3/48)×4/9
=23/48×4/9
=23/12×1/9
=23/108
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5/12÷9/4+7/112*4/9
=5/12*4/9+7/112*4/9
=4/9(5/12+7/112)
=4/9(140/336+21/336)
=4/9*161/336
=161/756
=5/12*4/9+7/112*4/9
=4/9(5/12+7/112)
=4/9(140/336+21/336)
=4/9*161/336
=161/756
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