3/7X1/4÷3/4 (3/8+2/3)X36 7/5X2/3+14/15÷1/9 13/12÷(3/4+1/3) 给答案,我看对不对,如果有过程的

如题所述

3/7X1/4÷3/4
=3/7X1/4X4/3
=1/7
(3/8+2/3)X36
=3/8X36+2/3X36
=37.5
7/5X2/3+14/15÷1/9
=14/15+14/15X9
=14/15(1+9)
=9又1/3
13/12÷(3/4+1/3)
=13/12X12/13
=1
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